16445672 has 8 divisors (see below), whose sum is σ = 30835650. Its totient is φ = 8222832.

The previous prime is 16445623. The next prime is 16445677. The reversal of 16445672 is 27654461.

It can be written as a sum of positive squares in only one way, i.e., 14092516 + 2353156 = 3754^2 + 1534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (16445677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027847 + ... + 1027862.

Almost surely, 2^16445672 is an apocalyptic number.

It is an amenable number.

16445672 is a deficient number, since it is larger than the sum of its proper divisors (14389978).

16445672 is a wasteful number, since it uses less digits than its factorization.

16445672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055715 (or 2055711 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 16445672 is about 4055.3263740419. The cubic root of 16445672 is about 254.3024483249.

The spelling of 16445672 in words is "sixteen million, four hundred forty-five thousand, six hundred seventy-two".