16166840 has 32 divisors (see below), whose sum is σ = 36504000. Its totient is φ = 6443904.

The previous prime is 16166827. The next prime is 16166879. The reversal of 16166840 is 4866161.

It is a happy number.

It is a super-2 number, since 2×16166840² = 522733431171200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16166797 and 16166806.

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, 15041 + ... + 16079.

It is an arithmetic number, because the mean of its divisors is an integer number (1140750).

Almost surely, 2^16166840 is an apocalyptic number.

16166840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16166840 is an abundant number, since it is smaller than the sum of its proper divisors (20337160).

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

16166840 is a wasteful number, since it uses less digits than its factorization.

16166840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1435 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 16166840 is about 4020.8009152406. The cubic root of 16166840 is about 252.8570382834.

The spelling of 16166840 in words is "sixteen million, one hundred sixty-six thousand, eight hundred forty".