22345660 has 48 divisors (see below), whose sum is σ = 49442400. Its totient is φ = 8470784.

The previous prime is 22345657. The next prime is 22345693. The reversal of 22345660 is 6654322.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33894 + ... + 34546.

It is an arithmetic number, because the mean of its divisors is an integer number (1030050).

Almost surely, 2^22345660 is an apocalyptic number.

22345660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22345660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24721200).

22345660 is an abundant number, since it is smaller than the sum of its proper divisors (27096740).

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

22345660 is a wasteful number, since it uses less digits than its factorization.

22345660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 22345660 is about 4727.1196303880. The cubic root of 22345660 is about 281.6638181537.

Adding to 22345660 its reverse (6654322), we get a palindrome (28999982).

It can be divided in two parts, 22345 and 660, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 22345660 in words is "twenty-two million, three hundred forty-five thousand, six hundred sixty".