15426990 has 64 divisors (see below), whose sum is σ = 43571520. Its totient is φ = 3870720.

The previous prime is 15426989. The next prime is 15426991. The reversal of 15426990 is 9962451.

It is an interprime number because it is at equal distance from previous prime (15426989) and next prime (15426991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15426991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2910 + ... + 6270.

It is an arithmetic number, because the mean of its divisors is an integer number (680805).

Almost surely, 2^15426990 is an apocalyptic number.

15426990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15426990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21785760).

15426990 is an abundant number, since it is smaller than the sum of its proper divisors (28144530).

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

15426990 is a wasteful number, since it uses less digits than its factorization.

15426990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394 (or 3388 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 15426990 is about 3927.7207130854. The cubic root of 15426990 is about 248.9394539973.

The spelling of 15426990 in words is "fifteen million, four hundred twenty-six thousand, nine hundred ninety".