22302864 has 50 divisors (see below), whose sum is σ = 64554710. Its totient is φ = 7433856.

The previous prime is 22302859. The next prime is 22302869. The reversal of 22302864 is 46820322.

It is an interprime number because it is at equal distance from previous prime (22302859) and next prime (22302869).

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 3640464 = 4320^2 + 1908^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22302869) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7309 + ... + 9900.

Almost surely, 2^22302864 is an apocalyptic number.

22302864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22302864 is an abundant number, since it is smaller than the sum of its proper divisors (42251846).

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

22302864 is a wasteful number, since it uses less digits than its factorization.

22302864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17229 (or 17214 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 22302864 is about 4722.5908143730. The cubic root of 22302864 is about 281.4838907731.

The spelling of 22302864 in words is "twenty-two million, three hundred two thousand, eight hundred sixty-four".