28903464 has 48 divisors (see below), whose sum is σ = 78666900. Its totient is φ = 9586944.

The previous prime is 28903453. The next prime is 28903471. The reversal of 28903464 is 46430982.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28836900 + 66564 = 5370^2 + 258^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 15612 + ... + 17364.

Almost surely, 2^28903464 is an apocalyptic number.

28903464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28903464 is an abundant number, since it is smaller than the sum of its proper divisors (49763436).

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

28903464 is a wasteful number, since it uses less digits than its factorization.

28903464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28903464 is about 5376.1941929212. The cubic root of 28903464 is about 306.8903964937.

The spelling of 28903464 in words is "twenty-eight million, nine hundred three thousand, four hundred sixty-four".