16556072 has 16 divisors (see below), whose sum is σ = 33430740. Its totient is φ = 7641216.

The previous prime is 16556069. The next prime is 16556107. The reversal of 16556072 is 27065561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 23716 = 4066^2 + 154^2 .

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, 79493 + ... + 79700.

Almost surely, 2^16556072 is an apocalyptic number.

It is an amenable number.

16556072 is an abundant number, since it is smaller than the sum of its proper divisors (16874668).

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

16556072 is a wasteful number, since it uses less digits than its factorization.

16556072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159212 (or 159208 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 16556072 is about 4068.9153345824. The cubic root of 16556072 is about 254.8702248795.

The spelling of 16556072 in words is "sixteen million, five hundred fifty-six thousand, seventy-two".