16406946 has 24 divisors (see below), whose sum is σ = 35633520. Its totient is φ = 5455896.

The previous prime is 16406941. The next prime is 16406959. The reversal of 16406946 is 64960461.

16406946 is a `hidden beast` number, since 1 + 640 + 6 + 9 + 4 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16406946.

It is not an unprimeable number, because it can be changed into a prime (16406941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9325 + ... + 10943.

It is an arithmetic number, because the mean of its divisors is an integer number (1484730).

Almost surely, 2^16406946 is an apocalyptic number.

16406946 is an abundant number, since it is smaller than the sum of its proper divisors (19226574).

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

16406946 is a wasteful number, since it uses less digits than its factorization.

16406946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 16406946 is about 4050.5488516990. The cubic root of 16406946 is about 254.1026823560.

The spelling of 16406946 in words is "sixteen million, four hundred six thousand, nine hundred forty-six".