28763204 has 6 divisors (see below), whose sum is σ = 50335614. Its totient is φ = 14381600.

The previous prime is 28763191. The next prime is 28763219. The reversal of 28763204 is 40236782.

It can be written as a sum of positive squares in only one way, i.e., 26543104 + 2220100 = 5152^2 + 1490^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3595397 + ... + 3595404.

It is an arithmetic number, because the mean of its divisors is an integer number (8389269).

Almost surely, 2^28763204 is an apocalyptic number.

It is an amenable number.

28763204 is a deficient number, since it is larger than the sum of its proper divisors (21572410).

28763204 is a wasteful number, since it uses less digits than its factorization.

28763204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190805 (or 7190803 counting only the distinct ones).

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

The square root of 28763204 is about 5363.1337853908. The cubic root of 28763204 is about 306.3931750917.

Adding to 28763204 its reverse (40236782), we get a palindrome (68999986).

The spelling of 28763204 in words is "twenty-eight million, seven hundred sixty-three thousand, two hundred four".