16197880 has 32 divisors (see below), whose sum is σ = 38365200. Its totient is φ = 6137856.

The previous prime is 16197859. The next prime is 16197901. The reversal of 16197880 is 8879161.

It is an interprime number because it is at equal distance from previous prime (16197859) and next prime (16197901).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9897 + ... + 11416.

Almost surely, 2^16197880 is an apocalyptic number.

16197880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16197880 is an abundant number, since it is smaller than the sum of its proper divisors (22167320).

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

16197880 is a wasteful number, since it uses less digits than its factorization.

16197880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21343 (or 21339 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16197880 is about 4024.6589917656. The cubic root of 16197880 is about 253.0187615951.

The spelling of 16197880 in words is "sixteen million, one hundred ninety-seven thousand, eight hundred eighty".