28472268 has 36 divisors (see below), whose sum is σ = 73027640. Its totient is φ = 8627520.

The previous prime is 28472219. The next prime is 28472273. The reversal of 28472268 is 86227482.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8353 + ... + 11256.

Almost surely, 2^28472268 is an apocalyptic number.

It is an amenable number.

28472268 is an abundant number, since it is smaller than the sum of its proper divisors (44555372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28472268 is a wasteful number, since it uses less digits than its factorization.

28472268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19638 (or 19625 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 28472268 is about 5335.9411540983. The cubic root of 28472268 is about 305.3566302258.

It can be divided in two parts, 2847 and 2268, that added together give a palindrome (5115).

The spelling of 28472268 in words is "twenty-eight million, four hundred seventy-two thousand, two hundred sixty-eight".