28450624 has 28 divisors (see below), whose sum is σ = 58407300. Its totient is φ = 13733888.

The previous prime is 28450613. The next prime is 28450627. The reversal of 28450624 is 42605482.

It can be written as a sum of positive squares in 2 ways, for example, as 8020224 + 20430400 = 2832^2 + 4520^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28450627) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5809 + ... + 9520.

It is an arithmetic number, because the mean of its divisors is an integer number (2085975).

Almost surely, 2^28450624 is an apocalyptic number.

It is an amenable number.

28450624 is an abundant number, since it is smaller than the sum of its proper divisors (29956676).

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

28450624 is a wasteful number, since it uses less digits than its factorization.

28450624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15370 (or 15360 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 28450624 is about 5333.9126352050. The cubic root of 28450624 is about 305.2792354509.

The spelling of 28450624 in words is "twenty-eight million, four hundred fifty thousand, six hundred twenty-four".