22299720 has 32 divisors (see below), whose sum is σ = 66899520. Its totient is φ = 5946560.

The previous prime is 22299713. The next prime is 22299727. The reversal of 22299720 is 2799222.

It is an interprime number because it is at equal distance from previous prime (22299713) and next prime (22299727).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22299727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92796 + ... + 93035.

It is an arithmetic number, because the mean of its divisors is an integer number (2090610).

Almost surely, 2^22299720 is an apocalyptic number.

22299720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22299720 is an abundant number, since it is smaller than the sum of its proper divisors (44599800).

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

22299720 is a wasteful number, since it uses less digits than its factorization.

22299720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185845 (or 185841 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 22299720 is about 4722.2579345055. The cubic root of 22299720 is about 281.4706633697.

The spelling of 22299720 in words is "twenty-two million, two hundred ninety-nine thousand, seven hundred twenty".