22031648 has 24 divisors (see below), whose sum is σ = 44872380. Its totient is φ = 10635520.

The previous prime is 22031641. The next prime is 22031657. The reversal of 22031648 is 84613022.

It can be written as a sum of positive squares in 2 ways, for example, as 19114384 + 2917264 = 4372^2 + 1708^2 .

It is not an unprimeable number, because it can be changed into a prime (22031641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10943 + ... + 12798.

Almost surely, 2^22031648 is an apocalyptic number.

It is an amenable number.

22031648 is an abundant number, since it is smaller than the sum of its proper divisors (22840732).

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

22031648 is a wasteful number, since it uses less digits than its factorization.

22031648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23780 (or 23772 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22031648 is about 4693.7882355300. The cubic root of 22031648 is about 280.3382307198.

The spelling of 22031648 in words is "twenty-two million, thirty-one thousand, six hundred forty-eight".