16117572 has 36 divisors (see below), whose sum is σ = 39329360. Its totient is φ = 5136912.

The previous prime is 16117553. The next prime is 16117601. The reversal of 16117572 is 27571161.

It is a super-2 number, since 2×16117572² = 519552254350368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5079 + ... + 7617.

Almost surely, 2^16117572 is an apocalyptic number.

16117572 is a gapful number since it is divisible by the number (12) 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 16117572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19664680).

16117572 is an abundant number, since it is smaller than the sum of its proper divisors (23211788).

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

16117572 is a wasteful number, since it uses less digits than its factorization.

16117572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592 (or 2567 counting only the distinct ones).

The product of its digits is 2940, while the sum is 30.

The square root of 16117572 is about 4014.6696003532. The cubic root of 16117572 is about 252.5999186293.

The spelling of 16117572 in words is "sixteen million, one hundred seventeen thousand, five hundred seventy-two".