22429980 has 96 divisors (see below), whose sum is σ = 70862400. Its totient is φ = 5889024.

The previous prime is 22429949. The next prime is 22429999. The reversal of 22429980 is 8992422.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39136 + ... + 39704.

It is an arithmetic number, because the mean of its divisors is an integer number (738150).

Almost surely, 2^22429980 is an apocalyptic number.

22429980 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 22429980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35431200).

22429980 is an abundant number, since it is smaller than the sum of its proper divisors (48432420).

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

22429980 is a wasteful number, since it uses less digits than its factorization.

22429980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22429980 is about 4736.0299830132. The cubic root of 22429980 is about 282.0176539423.

It can be divided in two parts, 22429 and 980, that added together give a square (23409 = 153²).

The spelling of 22429980 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred eighty".