22152340 has 24 divisors (see below), whose sum is σ = 53165952. Its totient is φ = 7595040.

The previous prime is 22152331. The next prime is 22152349. The reversal of 22152340 is 4325122.

It is an interprime number because it is at equal distance from previous prime (22152331) and next prime (22152349).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152349) 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, 78976 + ... + 79255.

It is an arithmetic number, because the mean of its divisors is an integer number (2215248).

Almost surely, 2^22152340 is an apocalyptic number.

22152340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22152340 is an abundant number, since it is smaller than the sum of its proper divisors (31013612).

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

22152340 is a wasteful number, since it uses less digits than its factorization.

22152340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158247 (or 158245 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22152340 is about 4706.6272425167. The cubic root of 22152340 is about 280.8492075623.

Adding to 22152340 its reverse (4325122), we get a palindrome (26477462).

The spelling of 22152340 in words is "twenty-two million, one hundred fifty-two thousand, three hundred forty".