22827440 has 20 divisors (see below), whose sum is σ = 53073984. Its totient is φ = 9130944.

The previous prime is 22827421. The next prime is 22827443. The reversal of 22827440 is 4472822.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (22827443) 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 3 ways as a sum of consecutive naturals, for example, 142592 + ... + 142751.

Almost surely, 2^22827440 is an apocalyptic number.

22827440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22827440 is an abundant number, since it is smaller than the sum of its proper divisors (30246544).

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

22827440 is a wasteful number, since it uses less digits than its factorization.

22827440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285356 (or 285350 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 22827440 is about 4777.8070283342. The cubic root of 22827440 is about 283.6736978430.

The spelling of 22827440 in words is "twenty-two million, eight hundred twenty-seven thousand, four hundred forty".