22781970 has 24 divisors (see below), whose sum is σ = 59233356. Its totient is φ = 6075168.

The previous prime is 22781963. The next prime is 22781977. The reversal of 22781970 is 7918722.

It is an interprime number because it is at equal distance from previous prime (22781963) and next prime (22781977).

It can be written as a sum of positive squares in 2 ways, for example, as 22781529 + 441 = 4773^2 + 21^2 .

It is not an unprimeable number, because it can be changed into a prime (22781977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126477 + ... + 126656.

Almost surely, 2^22781970 is an apocalyptic number.

22781970 is an abundant number, since it is smaller than the sum of its proper divisors (36451386).

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

22781970 is a wasteful number, since it uses less digits than its factorization.

22781970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253146 (or 253143 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 22781970 is about 4773.0461971366. The cubic root of 22781970 is about 283.4852226744.

The spelling of 22781970 in words is "twenty-two million, seven hundred eighty-one thousand, nine hundred seventy".