22305270 has 32 divisors (see below), whose sum is σ = 57651552. Its totient is φ = 5490432.

The previous prime is 22305251. The next prime is 22305277. The reversal of 22305270 is 7250322.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22305277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28207 + ... + 28986.

It is an arithmetic number, because the mean of its divisors is an integer number (1801611).

Almost surely, 2^22305270 is an apocalyptic number.

22305270 is an abundant number, since it is smaller than the sum of its proper divisors (35346282).

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

22305270 is a wasteful number, since it uses less digits than its factorization.

22305270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57216.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 22305270 is about 4722.8455405613. The cubic root of 22305270 is about 281.4940124312.

Adding to 22305270 its reverse (7250322), we get a palindrome (29555592).

The spelling of 22305270 in words is "twenty-two million, three hundred five thousand, two hundred seventy".