16423956 has 36 divisors (see below), whose sum is σ = 41644512. Its totient is φ = 5457744.

The previous prime is 16423951. The next prime is 16423973. The reversal of 16423956 is 65932461.

It is a happy number.

16423956 is a `hidden beast` number, since 1 + 642 + 3 + 9 + 5 + 6 = 666.

16423956 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16423956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16423951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17655 + ... + 18561.

It is an arithmetic number, because the mean of its divisors is an integer number (1156792).

Almost surely, 2^16423956 is an apocalyptic number.

It is an amenable number.

16423956 is an abundant number, since it is smaller than the sum of its proper divisors (25220556).

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

16423956 is a wasteful number, since it uses less digits than its factorization.

16423956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1415 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 16423956 is about 4052.6480232066. The cubic root of 16423956 is about 254.1904661879.

The spelling of 16423956 in words is "sixteen million, four hundred twenty-three thousand, nine hundred fifty-six".