22397982 has 8 divisors (see below), whose sum is σ = 44795976. Its totient is φ = 7465992.

The previous prime is 22397971. The next prime is 22397983. The reversal of 22397982 is 28979322.

It is a sphenic number, since it is the product of 3 distinct primes.

22397982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22397983) 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, 1866493 + ... + 1866504.

It is an arithmetic number, because the mean of its divisors is an integer number (5599497).

Almost surely, 2^22397982 is an apocalyptic number.

22397982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22397982 is a wasteful number, since it uses less digits than its factorization.

22397982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733002.

The product of its digits is 108864, while the sum is 42.

The square root of 22397982 is about 4732.6506315172. The cubic root of 22397982 is about 281.8834838803.

The spelling of 22397982 in words is "twenty-two million, three hundred ninety-seven thousand, nine hundred eighty-two".