22155460 has 12 divisors (see below), whose sum is σ = 46526508. Its totient is φ = 8862176.

The previous prime is 22155451. The next prime is 22155467. The reversal of 22155460 is 6455122.

It can be written as a sum of positive squares in 2 ways, for example, as 8964036 + 13191424 = 2994^2 + 3632^2 .

It is not an unprimeable number, because it can be changed into a prime (22155467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553867 + ... + 553906.

It is an arithmetic number, because the mean of its divisors is an integer number (3877209).

Almost surely, 2^22155460 is an apocalyptic number.

22155460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22155460 is an abundant number, since it is smaller than the sum of its proper divisors (24371048).

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

22155460 is a wasteful number, since it uses less digits than its factorization.

22155460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107782 (or 1107780 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22155460 is about 4706.9586783825. The cubic root of 22155460 is about 280.8623921498.

The spelling of 22155460 in words is "twenty-two million, one hundred fifty-five thousand, four hundred sixty".