16670394 has 32 divisors (see below), whose sum is σ = 39896640. Its totient is φ = 5129136.

The previous prime is 16670393. The next prime is 16670399. The reversal of 16670394 is 49307661.

It is a super-2 number, since 2×16670394² = 555804072230472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16670393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11172 + ... + 12575.

It is an arithmetic number, because the mean of its divisors is an integer number (1246770).

Almost surely, 2^16670394 is an apocalyptic number.

16670394 is an abundant number, since it is smaller than the sum of its proper divisors (23226246).

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

16670394 is a wasteful number, since it uses less digits than its factorization.

16670394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23771 (or 23765 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 16670394 is about 4082.9393823568. The cubic root of 16670394 is about 255.4555179831.

The spelling of 16670394 in words is "sixteen million, six hundred seventy thousand, three hundred ninety-four".