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28792752 = 24319131241
BaseRepresentation
bin110110111010…
…1011110110000
32000011211020020
41231311132300
524332332002
62505043440
7466506612
oct155653660
960154206
1028792752
111528646a
129786580
135c71641
143b76db2
1527db2bc
hex1b757b0

28792752 has 80 divisors (see below), whose sum is σ = 79221120. Its totient is φ = 8985600.

The previous prime is 28792741. The next prime is 28792759. The reversal of 28792752 is 25729782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28792759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119352 + ... + 119592.

It is an arithmetic number, because the mean of its divisors is an integer number (990264).

Almost surely, 228792752 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 28792752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39610560).

28792752 is an abundant number, since it is smaller than the sum of its proper divisors (50428368).

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

28792752 is a wasteful number, since it uses less digits than its factorization.

28792752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 28792752 is about 5365.8878109778. The cubic root of 28792752 is about 306.4980568613.

It can be divided in two parts, 287 and 92752, that added together give a palindrome (93039).

The spelling of 28792752 in words is "twenty-eight million, seven hundred ninety-two thousand, seven hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 19 24 38 48 57 76 114 131 152 228 241 262 304 393 456 482 524 723 786 912 964 1048 1446 1572 1928 2096 2489 2892 3144 3856 4579 4978 5784 6288 7467 9158 9956 11568 13737 14934 18316 19912 27474 29868 31571 36632 39824 54948 59736 63142 73264 94713 109896 119472 126284 189426 219792 252568 378852 505136 599849 757704 1199698 1515408 1799547 2399396 3599094 4798792 7198188 9597584 14396376 28792752