22648388 has 18 divisors (see below), whose sum is σ = 46106046. Its totient is φ = 9706368.

The previous prime is 22648387. The next prime is 22648393. The reversal of 22648388 is 88384622.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 1044484 = 4648^2 + 1022^2 .

It is not an unprimeable number, because it can be changed into a prime (22648387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57581 + ... + 57972.

It is an arithmetic number, because the mean of its divisors is an integer number (2561447).

Almost surely, 2^22648388 is an apocalyptic number.

22648388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22648388 is an abundant number, since it is smaller than the sum of its proper divisors (23457658).

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

22648388 is a wasteful number, since it uses less digits than its factorization.

22648388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115571 (or 115562 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 22648388 is about 4759.0322545660. The cubic root of 22648388 is about 282.9300646694.

The spelling of 22648388 in words is "twenty-two million, six hundred forty-eight thousand, three hundred eighty-eight".