28501832 has 8 divisors (see below), whose sum is σ = 53440950. Its totient is φ = 14250912.

The previous prime is 28501831. The next prime is 28501841. The reversal of 28501832 is 23810582.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 6280036 = 4714^2 + 2506^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28501795 and 28501804.

It is not an unprimeable number, because it can be changed into a prime (28501831) 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, 1781357 + ... + 1781372.

Almost surely, 2^28501832 is an apocalyptic number.

It is an amenable number.

28501832 is a deficient number, since it is larger than the sum of its proper divisors (24939118).

28501832 is a wasteful number, since it uses less digits than its factorization.

28501832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562735 (or 3562731 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 28501832 is about 5338.7107057791. The cubic root of 28501832 is about 305.4622820440.

The spelling of 28501832 in words is "twenty-eight million, five hundred one thousand, eight hundred thirty-two".