21967092 has 96 divisors (see below), whose sum is σ = 66528000. Its totient is φ = 6265728.

The previous prime is 21967091. The next prime is 21967129. The reversal of 21967092 is 29076912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21967091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36748 + ... + 37340.

It is an arithmetic number, because the mean of its divisors is an integer number (693000).

Almost surely, 2^21967092 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 21967092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33264000).

21967092 is an abundant number, since it is smaller than the sum of its proper divisors (44560908).

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

21967092 is a wasteful number, since it uses less digits than its factorization.

21967092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 21967092 is about 4686.9064424202. The cubic root of 21967092 is about 280.0641519674.

The spelling of 21967092 in words is "twenty-one million, nine hundred sixty-seven thousand, ninety-two".