15323980 has 48 divisors (see below), whose sum is σ = 38384640. Its totient is φ = 5024448.

The previous prime is 15323969. The next prime is 15323989. The reversal of 15323980 is 8932351.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15323989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (799680).

Almost surely, 2^15323980 is an apocalyptic number.

15323980 is a gapful number since it is divisible by the number (10) 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 15323980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19192320).

15323980 is an abundant number, since it is smaller than the sum of its proper divisors (23060660).

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

15323980 is a wasteful number, since it uses less digits than its factorization.

15323980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4798 (or 4796 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 15323980 is about 3914.5855463893. The cubic root of 15323980 is about 248.3841384675.

The spelling of 15323980 in words is "fifteen million, three hundred twenty-three thousand, nine hundred eighty".