22400082 has 24 divisors (see below), whose sum is σ = 48787596. Its totient is φ = 7427616.

The previous prime is 22400071. The next prime is 22400087. The reversal of 22400082 is 28000422.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 2499561 = 4461^2 + 1581^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22400087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388 + ... + 6704.

Almost surely, 2^22400082 is an apocalyptic number.

22400082 is an abundant number, since it is smaller than the sum of its proper divisors (26387514).

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

22400082 is a wasteful number, since it uses less digits than its factorization.

22400082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6522 (or 6519 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 22400082 is about 4732.8724893029. The cubic root of 22400082 is about 281.8922932575.

The spelling of 22400082 in words is "twenty-two million, four hundred thousand, eighty-two".