28702284 has 36 divisors (see below), whose sum is σ = 72525096. Its totient is φ = 8830848.

The previous prime is 28702279. The next prime is 28702291. The reversal of 28702284 is 48220782.

It is a super-2 number, since 2×28702284² = 1647642213633312, which contains 22 as substring.

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, 5049 + ... + 9104.

It is an arithmetic number, because the mean of its divisors is an integer number (2014586).

Almost surely, 2^28702284 is an apocalyptic number.

It is an amenable number.

28702284 is an abundant number, since it is smaller than the sum of its proper divisors (43822812).

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

28702284 is a wasteful number, since it uses less digits than its factorization.

28702284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14186 (or 14171 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 28702284 is about 5357.4512596943. The cubic root of 28702284 is about 306.1767102700.

The spelling of 28702284 in words is "twenty-eight million, seven hundred two thousand, two hundred eighty-four".