16115772 has 24 divisors (see below), whose sum is σ = 38120656. Its totient is φ = 5298048.

The previous prime is 16115767. The next prime is 16115797. The reversal of 16115772 is 27751161.

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, 8323 + ... + 10074.

Almost surely, 2^16115772 is an apocalyptic number.

16115772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16115772 is an abundant number, since it is smaller than the sum of its proper divisors (22004884).

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

16115772 is a wasteful number, since it uses less digits than its factorization.

16115772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18477 (or 18475 counting only the distinct ones).

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

The square root of 16115772 is about 4014.4454162437. The cubic root of 16115772 is about 252.5905148808.

The spelling of 16115772 in words is "sixteen million, one hundred fifteen thousand, seven hundred seventy-two".