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28085024 = 2511233469
BaseRepresentation
bin110101100100…
…0101100100000
31221211212102002
41223020230200
524142210044
62441543132
7460501352
oct153105440
957755362
1028085024
1114942770
1294a4aa8
135a84476
143a310d2
1526eb74e
hex1ac8b20

28085024 has 48 divisors (see below), whose sum is σ = 62959680. Its totient is φ = 12207360.

The previous prime is 28085023. The next prime is 28085027. The reversal of 28085024 is 42058082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28085023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6362 + ... + 9830.

It is an arithmetic number, because the mean of its divisors is an integer number (1311660).

Almost surely, 228085024 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 28085024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31479840).

28085024 is an abundant number, since it is smaller than the sum of its proper divisors (34874656).

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

28085024 is a wasteful number, since it uses less digits than its factorization.

28085024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 28085024 is about 5299.5305452464. The cubic root of 28085024 is about 303.9659472476.

The spelling of 28085024 in words is "twenty-eight million, eighty-five thousand, twenty-four".

Divisors: 1 2 4 8 11 16 22 23 32 44 46 88 92 176 184 253 352 368 506 736 1012 2024 3469 4048 6938 8096 13876 27752 38159 55504 76318 79787 111008 152636 159574 305272 319148 610544 638296 877657 1221088 1276592 1755314 2553184 3510628 7021256 14042512 28085024