21376092 has 12 divisors (see below), whose sum is σ = 49877576. Its totient is φ = 7125360.

The previous prime is 21376073. The next prime is 21376093. The reversal of 21376092 is 29067312.

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

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890659 + ... + 890682.

Almost surely, 2^21376092 is an apocalyptic number.

It is an amenable number.

21376092 is an abundant number, since it is smaller than the sum of its proper divisors (28501484).

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

21376092 is a wasteful number, since it uses less digits than its factorization.

21376092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781348 (or 1781346 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 21376092 is about 4623.4285979130. The cubic root of 21376092 is about 277.5296811041.

The spelling of 21376092 in words is "twenty-one million, three hundred seventy-six thousand, ninety-two".