28925944 has 8 divisors (see below), whose sum is σ = 54236160. Its totient is φ = 14462968.

The previous prime is 28925921. The next prime is 28926011. The reversal of 28925944 is 44952982.

It is a happy number.

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

It is a super-2 number, since 2×28925944² = 1673420472582272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28925944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1807864 + ... + 1807879.

It is an arithmetic number, because the mean of its divisors is an integer number (6779520).

Almost surely, 2^28925944 is an apocalyptic number.

It is an amenable number.

28925944 is a deficient number, since it is larger than the sum of its proper divisors (25310216).

28925944 is a wasteful number, since it uses less digits than its factorization.

28925944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615749 (or 3615745 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 28925944 is about 5378.2844848520. The cubic root of 28925944 is about 306.9699383821.

It can be divided in two parts, 2892 and 5944, that added together give a square (8836 = 94²).

The spelling of 28925944 in words is "twenty-eight million, nine hundred twenty-five thousand, nine hundred forty-four".