16855372 has 6 divisors (see below), whose sum is σ = 29496908. Its totient is φ = 8427684.

The previous prime is 16855369. The next prime is 16855373. The reversal of 16855372 is 27355861.

It is not an unprimeable number, because it can be changed into a prime (16855373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2106918 + ... + 2106925.

Almost surely, 2^16855372 is an apocalyptic number.

It is an amenable number.

16855372 is a deficient number, since it is larger than the sum of its proper divisors (12641536).

16855372 is a wasteful number, since it uses less digits than its factorization.

16855372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213847 (or 4213845 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 16855372 is about 4105.5294421061. The cubic root of 16855372 is about 256.3969062851.

The spelling of 16855372 in words is "sixteen million, eight hundred fifty-five thousand, three hundred seventy-two".