15990828 has 24 divisors (see below), whose sum is σ = 42642432. Its totient is φ = 4568784.

The previous prime is 15990827. The next prime is 15990839. The reversal of 15990828 is 82809951.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 15990828.

It is not an unprimeable number, because it can be changed into a prime (15990827) 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, 95100 + ... + 95267.

It is an arithmetic number, because the mean of its divisors is an integer number (1776768).

Almost surely, 2^15990828 is an apocalyptic number.

It is an amenable number.

15990828 is an abundant number, since it is smaller than the sum of its proper divisors (26651604).

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

15990828 is a wasteful number, since it uses less digits than its factorization.

15990828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190381 (or 190379 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 15990828 is about 3998.8533356451. The cubic root of 15990828 is about 251.9360507926.

The spelling of 15990828 in words is "fifteen million, nine hundred ninety thousand, eight hundred twenty-eight".