22671680 has 28 divisors (see below), whose sum is σ = 53987700. Its totient is φ = 9068544.

The previous prime is 22671667. The next prime is 22671689. The reversal of 22671680 is 8617622.

It can be written as a sum of positive squares in 2 ways, for example, as 13719616 + 8952064 = 3704^2 + 2992^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22671689) 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, 35105 + ... + 35744.

Almost surely, 2^22671680 is an apocalyptic number.

22671680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22671680 is an abundant number, since it is smaller than the sum of its proper divisors (31316020).

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

22671680 is an equidigital number, since it uses as much as digits as its factorization.

22671680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70866 (or 70856 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 22671680 is about 4761.4787618974. The cubic root of 22671680 is about 283.0270215222.

The spelling of 22671680 in words is "twenty-two million, six hundred seventy-one thousand, six hundred eighty".