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28032676 = 22719232979
BaseRepresentation
bin110101011101…
…1111010100100
31221202012121021
41222323322210
524134021201
62440500524
7460162630
oct152737244
957665537
1028032676
1114907401
12947a744
135a666a9
143a19dc0
1526daea1
hex1abbea4

28032676 has 96 divisors (see below), whose sum is σ = 64512000. Its totient is φ = 10378368.

The previous prime is 28032673. The next prime is 28032679. The reversal of 28032676 is 67623082.

28032676 = T1 + T2 + ... + T551.

28032676 is a nontrivial binomial coefficient, being equal to C(553, 3).

It is an interprime number because it is at equal distance from previous prime (28032673) and next prime (28032679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28032673) by changing a digit.

It is the 551-st tetrahedral number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354805 + ... + 354883.

It is an arithmetic number, because the mean of its divisors is an integer number (672000).

Almost surely, 228032676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28032676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32256000).

28032676 is an abundant number, since it is smaller than the sum of its proper divisors (36479324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28032676 is a wasteful number, since it uses less digits than its factorization.

28032676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 28032676 is about 5294.5893136295. The cubic root of 28032676 is about 303.7769745784.

The spelling of 28032676 in words is "twenty-eight million, thirty-two thousand, six hundred seventy-six".

Divisors: 1 2 4 7 14 19 23 28 29 38 46 58 76 79 92 116 133 158 161 203 266 316 322 406 437 532 551 553 644 667 812 874 1102 1106 1334 1501 1748 1817 2204 2212 2291 2668 3002 3059 3634 3857 4582 4669 6004 6118 7268 7714 9164 9338 10507 12236 12673 12719 15428 16037 18676 21014 25346 25438 32074 34523 42028 43529 50692 50876 52693 64148 69046 87058 88711 105386 138092 174116 177422 210772 241661 304703 354844 368851 483322 609406 737702 966644 1001167 1218812 1475404 2002334 4004668 7008169 14016338 28032676