28976904 has 48 divisors (see below), whose sum is σ = 85615920. Its totient is φ = 8780640.

The previous prime is 28976903. The next prime is 28976911. The reversal of 28976904 is 40967982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28976904.

It is not an unprimeable number, because it can be changed into a prime (28976903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17502 + ... + 19085.

It is an arithmetic number, because the mean of its divisors is an integer number (1783665).

Almost surely, 2^28976904 is an apocalyptic number.

28976904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28976904 is an abundant number, since it is smaller than the sum of its proper divisors (56639016).

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

28976904 is a wasteful number, since it uses less digits than its factorization.

28976904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36610 (or 36603 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 28976904 is about 5383.0199702398. The cubic root of 28976904 is about 307.1500997236.

It can be divided in two parts, 2897 and 6904, that added together give a square (9801 = 99²).

The spelling of 28976904 in words is "twenty-eight million, nine hundred seventy-six thousand, nine hundred four".