28914904 has 8 divisors (see below), whose sum is σ = 54215460. Its totient is φ = 14457448.

The previous prime is 28914901. The next prime is 28914929. The reversal of 28914904 is 40941982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28914901) 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 as a sum of consecutive naturals, namely, 1807174 + ... + 1807189.

Almost surely, 2^28914904 is an apocalyptic number.

It is an amenable number.

28914904 is a deficient number, since it is larger than the sum of its proper divisors (25300556).

28914904 is a wasteful number, since it uses less digits than its factorization.

28914904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614369 (or 3614365 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 28914904 is about 5377.2580373272. The cubic root of 28914904 is about 306.9308802577.

The spelling of 28914904 in words is "twenty-eight million, nine hundred fourteen thousand, nine hundred four".