22671640 has 16 divisors (see below), whose sum is σ = 51011280. Its totient is φ = 9068640.

The previous prime is 22671637. The next prime is 22671653. The reversal of 22671640 is 4617622.

It is a junction number, because it is equal to n+sod(n) for n = 22671599 and 22671608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283356 + ... + 283435.

It is an arithmetic number, because the mean of its divisors is an integer number (3188205).

Almost surely, 2^22671640 is an apocalyptic number.

22671640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22671640 is an abundant number, since it is smaller than the sum of its proper divisors (28339640).

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

22671640 is a wasteful number, since it uses less digits than its factorization.

22671640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566802 (or 566798 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22671640 is about 4761.4745615198. The cubic root of 22671640 is about 283.0268550724.

The spelling of 22671640 in words is "twenty-two million, six hundred seventy-one thousand, six hundred forty".