28463388 has 48 divisors (see below), whose sum is σ = 68597760. Its totient is φ = 9180864.

The previous prime is 28463371. The next prime is 28463399. The reversal of 28463388 is 88336482.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61245 + ... + 61707.

It is an arithmetic number, because the mean of its divisors is an integer number (1429120).

Almost surely, 2^28463388 is an apocalyptic number.

It is an amenable number.

28463388 is an abundant number, since it is smaller than the sum of its proper divisors (40134372).

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

28463388 is a wasteful number, since it uses less digits than its factorization.

28463388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 624 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 28463388 is about 5335.1089960750. The cubic root of 28463388 is about 305.3248818028.

The spelling of 28463388 in words is "twenty-eight million, four hundred sixty-three thousand, three hundred eighty-eight".