22151792 has 40 divisors (see below), whose sum is σ = 46507440. Its totient is φ = 10160640.

The previous prime is 22151771. The next prime is 22151797. The reversal of 22151792 is 29715122.

It is a super-2 number, since 2×22151792² = 981403777622528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22151797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58259 + ... + 58637.

It is an arithmetic number, because the mean of its divisors is an integer number (1162686).

Almost surely, 2^22151792 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 22151792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23253720).

22151792 is an abundant number, since it is smaller than the sum of its proper divisors (24355648).

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

22151792 is a wasteful number, since it uses less digits than its factorization.

22151792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 675 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 22151792 is about 4706.5690263715. The cubic root of 22151792 is about 280.8468916801.

The spelling of 22151792 in words is "twenty-two million, one hundred fifty-one thousand, seven hundred ninety-two".