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28752936 = 2331816619
BaseRepresentation
bin110110110101…
…1110000101000
32000002210121120
41231223300220
524330043221
62504135240
7466252542
oct155536050
960083546
1028752936
1115259563
129767520
135c59494
143b66692
1527ce5c6
hex1b6bc28

28752936 has 32 divisors (see below), whose sum is σ = 72290400. Its totient is φ = 9529920.

The previous prime is 28752929. The next prime is 28752937. The reversal of 28752936 is 63925782.

It is not an unprimeable number, because it can be changed into a prime (28752937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (2259075).

Almost surely, 228752936 is an apocalyptic number.

It is an amenable number.

28752936 is an abundant number, since it is smaller than the sum of its proper divisors (43537464).

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

28752936 is a wasteful number, since it uses less digits than its factorization.

28752936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809 (or 6805 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 28752936 is about 5362.1764238041. The cubic root of 28752936 is about 306.3567116116.

The spelling of 28752936 in words is "twenty-eight million, seven hundred fifty-two thousand, nine hundred thirty-six".

Divisors: 1 2 3 4 6 8 12 24 181 362 543 724 1086 1448 2172 4344 6619 13238 19857 26476 39714 52952 79428 158856 1198039 2396078 3594117 4792156 7188234 9584312 14376468 28752936