22640466 has 8 divisors (see below), whose sum is σ = 45280944. Its totient is φ = 7546820.

The previous prime is 22640461. The next prime is 22640467. The reversal of 22640466 is 66404622.

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

22640466 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22640461) 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, 1886700 + ... + 1886711.

It is an arithmetic number, because the mean of its divisors is an integer number (5660118).

Almost surely, 2^22640466 is an apocalyptic number.

22640466 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.

22640466 is a wasteful number, since it uses less digits than its factorization.

22640466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773416.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 22640466 is about 4758.1998696986. The cubic root of 22640466 is about 282.8970728681.

The spelling of 22640466 in words is "twenty-two million, six hundred forty thousand, four hundred sixty-six".