22557270 has 16 divisors (see below), whose sum is σ = 54137520. Its totient is φ = 6015264.

The previous prime is 22557263. The next prime is 22557287. The reversal of 22557270 is 7275522.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 751909 = 22557270 / (2 + 2 + 5 + 5 + 7 + 2 + 7 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 375925 + ... + 375984.

It is an arithmetic number, because the mean of its divisors is an integer number (3383595).

Almost surely, 2^22557270 is an apocalyptic number.

22557270 is an abundant number, since it is smaller than the sum of its proper divisors (31580250).

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

22557270 is a wasteful number, since it uses less digits than its factorization.

22557270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751919.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 22557270 is about 4749.4494417774. The cubic root of 22557270 is about 282.5501307647.

The spelling of 22557270 in words is "twenty-two million, five hundred fifty-seven thousand, two hundred seventy".