15997230 has 64 divisors (see below), whose sum is σ = 43027200. Its totient is φ = 4229280.

The previous prime is 15997229. The next prime is 15997231. The reversal of 15997230 is 3279951.

15997230 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15997229) and next prime (15997231).

It is a super-2 number, since 2×15997230² = 511822735345800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997231) 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, 48165 + ... + 48495.

It is an arithmetic number, because the mean of its divisors is an integer number (672300).

Almost surely, 2^15997230 is an apocalyptic number.

15997230 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 15997230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21513600).

15997230 is an abundant number, since it is smaller than the sum of its proper divisors (27029970).

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

15997230 is a wasteful number, since it uses less digits than its factorization.

15997230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 15997230 is about 3999.6537350126. The cubic root of 15997230 is about 251.9696675509.

The spelling of 15997230 in words is "fifteen million, nine hundred ninety-seven thousand, two hundred thirty".