28706204 has 6 divisors (see below), whose sum is σ = 50235864. Its totient is φ = 14353100.

The previous prime is 28706159. The next prime is 28706221. The reversal of 28706204 is 40260782.

It is a super-2 number, since 2×28706204² = 1648092296179232, which contains 22 as substring.

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, 3588272 + ... + 3588279.

It is an arithmetic number, because the mean of its divisors is an integer number (8372644).

Almost surely, 2^28706204 is an apocalyptic number.

It is an amenable number.

28706204 is a deficient number, since it is larger than the sum of its proper divisors (21529660).

28706204 is a wasteful number, since it uses less digits than its factorization.

28706204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7176555 (or 7176553 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28706204 is about 5357.8170928093. The cubic root of 28706204 is about 306.1906482789.

Adding to 28706204 its reverse (40260782), we get a palindrome (68966986).

The spelling of 28706204 in words is "twenty-eight million, seven hundred six thousand, two hundred four".