22994720 has 96 divisors (see below), whose sum is σ = 63504000. Its totient is φ = 7865088.

The previous prime is 22994717. The next prime is 22994729. The reversal of 22994720 is 2749922.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (22994729) 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, 54671 + ... + 55089.

It is an arithmetic number, because the mean of its divisors is an integer number (661500).

Almost surely, 2^22994720 is an apocalyptic number.

22994720 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 22994720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31752000).

22994720 is an abundant number, since it is smaller than the sum of its proper divisors (40509280).

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

22994720 is an equidigital number, since it uses as much as digits as its factorization.

22994720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 22994720 is about 4795.2810136633. The cubic root of 22994720 is about 284.3649345550.

It can be divided in two parts, 229 and 94720, that added together give a palindrome (94949).

The spelling of 22994720 in words is "twenty-two million, nine hundred ninety-four thousand, seven hundred twenty".