16940406 has 32 divisors (see below), whose sum is σ = 38995200. Its totient is φ = 4805856.

The previous prime is 16940389. The next prime is 16940411. The reversal of 16940406 is 60404961.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 7611.

It is an arithmetic number, because the mean of its divisors is an integer number (1218600).

Almost surely, 2^16940406 is an apocalyptic number.

16940406 is an abundant number, since it is smaller than the sum of its proper divisors (22054794).

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

16940406 is a wasteful number, since it uses less digits than its factorization.

16940406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 16940406 is about 4115.8724470032. The cubic root of 16940406 is about 256.8273505191.

The spelling of 16940406 in words is "sixteen million, nine hundred forty thousand, four hundred six".