28363604 has 6 divisors (see below), whose sum is σ = 49636314. Its totient is φ = 14181800.

The previous prime is 28363603. The next prime is 28363627. The reversal of 28363604 is 40636382.

It can be written as a sum of positive squares in only one way, i.e., 24482704 + 3880900 = 4948^2 + 1970^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28363603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545447 + ... + 3545454.

It is an arithmetic number, because the mean of its divisors is an integer number (8272719).

Almost surely, 2^28363604 is an apocalyptic number.

It is an amenable number.

28363604 is a deficient number, since it is larger than the sum of its proper divisors (21272710).

28363604 is a wasteful number, since it uses less digits than its factorization.

28363604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090905 (or 7090903 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 28363604 is about 5325.7491491808. The cubic root of 28363604 is about 304.9676719296.

Adding to 28363604 its reverse (40636382), we get a palindrome (68999986).

The spelling of 28363604 in words is "twenty-eight million, three hundred sixty-three thousand, six hundred four".