15490816 has 36 divisors (see below), whose sum is σ = 33738264. Its totient is φ = 7040000.

The previous prime is 15490801. The next prime is 15490823. The reversal of 15490816 is 61809451.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66 + ... + 5566.

It is an arithmetic number, because the mean of its divisors is an integer number (937174).

Almost surely, 2^15490816 is an apocalyptic number.

15490816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15490816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16869132).

15490816 is an abundant number, since it is smaller than the sum of its proper divisors (18247448).

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

15490816 is an equidigital number, since it uses as much as digits as its factorization.

15490816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528 (or 5514 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 15490816 is about 3935.8373950152. The cubic root of 15490816 is about 249.2822935616.

The spelling of 15490816 in words is "fifteen million, four hundred ninety thousand, eight hundred sixteen".