22609780 has 24 divisors (see below), whose sum is σ = 47595240. Its totient is φ = 9022080.

The previous prime is 22609771. The next prime is 22609789. The reversal of 22609780 is 8790622.

It is an interprime number because it is at equal distance from previous prime (22609771) and next prime (22609789).

It can be written as a sum of positive squares in 4 ways, for example, as 6832996 + 15776784 = 2614^2 + 3972^2 .

It is a super-2 number, since 2×22609780² = 1022404303296800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22609789) 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, 9070 + ... + 11290.

It is an arithmetic number, because the mean of its divisors is an integer number (1983135).

Almost surely, 2^22609780 is an apocalyptic number.

22609780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22609780 is an abundant number, since it is smaller than the sum of its proper divisors (24985460).

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

22609780 is a wasteful number, since it uses less digits than its factorization.

22609780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 22609780 is about 4754.9742375748. The cubic root of 22609780 is about 282.7692058815.

The spelling of 22609780 in words is "twenty-two million, six hundred nine thousand, seven hundred eighty".