28604372 has 6 divisors (see below), whose sum is σ = 50057658. Its totient is φ = 14302184.

The previous prime is 28604371. The next prime is 28604423. The reversal of 28604372 is 27340682.

It can be written as a sum of positive squares in only one way, i.e., 27081616 + 1522756 = 5204^2 + 1234^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28604371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3575543 + ... + 3575550.

It is an arithmetic number, because the mean of its divisors is an integer number (8342943).

Almost surely, 2^28604372 is an apocalyptic number.

It is an amenable number.

28604372 is a deficient number, since it is larger than the sum of its proper divisors (21453286).

28604372 is a wasteful number, since it uses less digits than its factorization.

28604372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151097 (or 7151095 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 28604372 is about 5348.3055260522. The cubic root of 28604372 is about 305.8281604568.

The spelling of 28604372 in words is "twenty-eight million, six hundred four thousand, three hundred seventy-two".