22307768 has 16 divisors (see below), whose sum is σ = 47802480. Its totient is φ = 9560448.

The previous prime is 22307741. The next prime is 22307771. The reversal of 22307768 is 86770322.

It is a super-3 number, since 3×22307768³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199121 + ... + 199232.

It is an arithmetic number, because the mean of its divisors is an integer number (2987655).

Almost surely, 2^22307768 is an apocalyptic number.

22307768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22307768 is an abundant number, since it is smaller than the sum of its proper divisors (25494712).

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

22307768 is a wasteful number, since it uses less digits than its factorization.

22307768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398366 (or 398362 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22307768 is about 4723.1099923673. The cubic root of 22307768 is about 281.5045203484.

The spelling of 22307768 in words is "twenty-two million, three hundred seven thousand, seven hundred sixty-eight".