16219972 has 12 divisors (see below), whose sum is σ = 30054780. Its totient is φ = 7632896.

The previous prime is 16219933. The next prime is 16219981. The reversal of 16219972 is 27991261.

It can be written as a sum of positive squares in 2 ways, for example, as 10536516 + 5683456 = 3246^2 + 2384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119197 + ... + 119332.

It is an arithmetic number, because the mean of its divisors is an integer number (2504565).

Almost surely, 2^16219972 is an apocalyptic number.

It is an amenable number.

16219972 is a deficient number, since it is larger than the sum of its proper divisors (13834808).

16219972 is a wasteful number, since it uses less digits than its factorization.

16219972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238550 (or 238548 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 16219972 is about 4027.4026369361. The cubic root of 16219972 is about 253.1337385999.

The spelling of 16219972 in words is "sixteen million, two hundred nineteen thousand, nine hundred seventy-two".