21341992 has 32 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 9100224.

The previous prime is 21341951. The next prime is 21341993. The reversal of 21341992 is 29914312.

It is not an unprimeable number, because it can be changed into a prime (21341993) 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 7 ways as a sum of consecutive naturals, for example, 11634 + ... + 13342.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^21341992 is an apocalyptic number.

It is an amenable number.

21341992 is an abundant number, since it is smaller than the sum of its proper divisors (24622808).

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

21341992 is a wasteful number, since it uses less digits than its factorization.

21341992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1941 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 21341992 is about 4619.7393865888. The cubic root of 21341992 is about 277.3820270659.

The spelling of 21341992 in words is "twenty-one million, three hundred forty-one thousand, nine hundred ninety-two".