28662404 has 6 divisors (see below), whose sum is σ = 50159214. Its totient is φ = 14331200.

The previous prime is 28662401. The next prime is 28662419. The reversal of 28662404 is 40426682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22108804 + 6553600 = 4702^2 + 2560^2 .

It is not an unprimeable number, because it can be changed into a prime (28662401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3582797 + ... + 3582804.

It is an arithmetic number, because the mean of its divisors is an integer number (8359869).

Almost surely, 2^28662404 is an apocalyptic number.

It is an amenable number.

28662404 is a deficient number, since it is larger than the sum of its proper divisors (21496810).

28662404 is a wasteful number, since it uses less digits than its factorization.

28662404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7165605 (or 7165603 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 28662404 is about 5353.7280468847. The cubic root of 28662404 is about 306.0348401813.

The spelling of 28662404 in words is "twenty-eight million, six hundred sixty-two thousand, four hundred four".