28929944 has 48 divisors (see below), whose sum is σ = 57911760. Its totient is φ = 13540800.

The previous prime is 28929889. The next prime is 28929977. The reversal of 28929944 is 44992982.

28929944 = 603² + 604² + ... + 673².

Its product of digits (373248) is a multiple of the sum of its prime factors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407429 + ... + 407499.

It is an arithmetic number, because the mean of its divisors is an integer number (1206495).

Almost surely, 2^28929944 is an apocalyptic number.

It is an amenable number.

28929944 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

28929944 is a wasteful number, since it uses less digits than its factorization.

28929944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 157 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 28929944 is about 5378.6563377855. The cubic root of 28929944 is about 306.9840874237.

The spelling of 28929944 in words is "twenty-eight million, nine hundred twenty-nine thousand, nine hundred forty-four".