28838280 has 32 divisors (see below), whose sum is σ = 86515200. Its totient is φ = 7690176.

The previous prime is 28838279. The next prime is 28838287. The reversal of 28838280 is 8283882.

It is not an unprimeable number, because it can be changed into a prime (28838287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120040 + ... + 120279.

It is an arithmetic number, because the mean of its divisors is an integer number (2703600).

Almost surely, 2^28838280 is an apocalyptic number.

28838280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28838280 is an abundant number, since it is smaller than the sum of its proper divisors (57676920).

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

28838280 is a wasteful number, since it uses less digits than its factorization.

28838280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240333 (or 240329 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 28838280 is about 5370.1284900829. The cubic root of 28838280 is about 306.6595198923.

The spelling of 28838280 in words is "twenty-eight million, eight hundred thirty-eight thousand, two hundred eighty".