28604402 has 8 divisors (see below), whose sum is σ = 43027200. Its totient is φ = 14262004.

The previous prime is 28604371. The next prime is 28604423. The reversal of 28604402 is 20440682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19202 + ... + 20637.

It is an arithmetic number, because the mean of its divisors is an integer number (5378400).

Almost surely, 2^28604402 is an apocalyptic number.

28604402 is a deficient number, since it is larger than the sum of its proper divisors (14422798).

28604402 is a wasteful number, since it uses less digits than its factorization.

28604402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40200.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 28604402 is about 5348.3083306780. The cubic root of 28604402 is about 305.8282673734.

The spelling of 28604402 in words is "twenty-eight million, six hundred four thousand, four hundred two".