15794220 has 48 divisors (see below), whose sum is σ = 47628000. Its totient is φ = 3887616.

The previous prime is 15794213. The next prime is 15794237. The reversal of 15794220 is 2249751.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9345 + ... + 10904.

It is an arithmetic number, because the mean of its divisors is an integer number (992250).

Almost surely, 2^15794220 is an apocalyptic number.

15794220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15794220 is an abundant number, since it is smaller than the sum of its proper divisors (31833780).

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

15794220 is a wasteful number, since it uses less digits than its factorization.

15794220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20274 (or 20272 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 15794220 is about 3974.1942579597. The cubic root of 15794220 is about 250.8992680560.

The spelling of 15794220 in words is "fifteen million, seven hundred ninety-four thousand, two hundred twenty".