22402770 has 128 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 4976640.

The previous prime is 22402693. The next prime is 22402771. The reversal of 22402770 is 7720422.

It is a self number, because there is not a number n which added to its sum of digits gives 22402770.

It is not an unprimeable number, because it can be changed into a prime (22402771) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 205476 + ... + 205584.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

Almost surely, 2^22402770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22402770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933440).

22402770 is an abundant number, since it is smaller than the sum of its proper divisors (41464110).

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

22402770 is a wasteful number, since it uses less digits than its factorization.

22402770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 22402770 is about 4733.1564520941. The cubic root of 22402770 is about 281.9035684569.

The spelling of 22402770 in words is "twenty-two million, four hundred two thousand, seven hundred seventy".