15238220 has 24 divisors (see below), whose sum is σ = 32133024. Its totient is φ = 6070016.

The previous prime is 15238193. The next prime is 15238229. The reversal of 15238220 is 2283251.

It is not an unprimeable number, because it can be changed into a prime (15238229) 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, 3812 + ... + 6708.

It is an arithmetic number, because the mean of its divisors is an integer number (1338876).

Almost surely, 2^15238220 is an apocalyptic number.

15238220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15238220 is an abundant number, since it is smaller than the sum of its proper divisors (16894804).

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

15238220 is a wasteful number, since it uses less digits than its factorization.

15238220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169 (or 3167 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 15238220 is about 3903.6162721251. The cubic root of 15238220 is about 247.9199143075.

The spelling of 15238220 in words is "fifteen million, two hundred thirty-eight thousand, two hundred twenty".