16600404 has 12 divisors (see below), whose sum is σ = 38734304. Its totient is φ = 5533464.

The previous prime is 16600393. The next prime is 16600421. The reversal of 16600404 is 40400661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691672 + ... + 691695.

Almost surely, 2^16600404 is an apocalyptic number.

It is an amenable number.

16600404 is an abundant number, since it is smaller than the sum of its proper divisors (22133900).

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

16600404 is a wasteful number, since it uses less digits than its factorization.

16600404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383374 (or 1383372 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 16600404 is about 4074.3593361411. The cubic root of 16600404 is about 255.0975098056.

The spelling of 16600404 in words is "sixteen million, six hundred thousand, four hundred four".