16406938 has 16 divisors (see below), whose sum is σ = 26193024. Its totient is φ = 7680960.

The previous prime is 16406933. The next prime is 16406941. The reversal of 16406938 is 83960461.

It is a super-2 number, since 2×16406938² = 538375229071688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16406897 and 16406906.

It is not an unprimeable number, because it can be changed into a prime (16406933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6031 + ... + 8317.

It is an arithmetic number, because the mean of its divisors is an integer number (1637064).

Almost surely, 2^16406938 is an apocalyptic number.

16406938 is a deficient number, since it is larger than the sum of its proper divisors (9786086).

16406938 is a wasteful number, since it uses less digits than its factorization.

16406938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 16406938 is about 4050.5478641784. The cubic root of 16406938 is about 254.1026410560.

The spelling of 16406938 in words is "sixteen million, four hundred six thousand, nine hundred thirty-eight".