16403992 has 32 divisors (see below), whose sum is σ = 35323200. Its totient is φ = 7063200.

The previous prime is 16403971. The next prime is 16403999. The reversal of 16403992 is 29930461.

16403992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16403999) 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, 3234 + ... + 6577.

It is an arithmetic number, because the mean of its divisors is an integer number (1103850).

Almost surely, 2^16403992 is an apocalyptic number.

It is an amenable number.

16403992 is an abundant number, since it is smaller than the sum of its proper divisors (18919208).

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

16403992 is a wasteful number, since it uses less digits than its factorization.

16403992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9847 (or 9843 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 16403992 is about 4050.1841933423. The cubic root of 16403992 is about 254.0874314093.

The spelling of 16403992 in words is "sixteen million, four hundred three thousand, nine hundred ninety-two".