21341392 has 40 divisors (see below), whose sum is σ = 45211392. Its totient is φ = 9715200.

The previous prime is 21341387. The next prime is 21341407. The reversal of 21341392 is 29314312.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7167 + ... + 9697.

Almost surely, 2^21341392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21341392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22605696).

21341392 is an abundant number, since it is smaller than the sum of its proper divisors (23870000).

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

21341392 is a wasteful number, since it uses less digits than its factorization.

21341392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587 (or 2581 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 21341392 is about 4619.6744474043. The cubic root of 21341392 is about 277.3794276401.

The spelling of 21341392 in words is "twenty-one million, three hundred forty-one thousand, three hundred ninety-two".