22691680 has 48 divisors (see below), whose sum is σ = 58487184. Its totient is φ = 8250880.

The previous prime is 22691653. The next prime is 22691687. The reversal of 22691680 is 8619622.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22691687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4687 + ... + 8206.

It is an arithmetic number, because the mean of its divisors is an integer number (1218483).

Almost surely, 2^22691680 is an apocalyptic number.

22691680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22691680 is an abundant number, since it is smaller than the sum of its proper divisors (35795504).

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

22691680 is a wasteful number, since it uses less digits than its factorization.

22691680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12919 (or 12911 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 22691680 is about 4763.5784868101. The cubic root of 22691680 is about 283.1102218959.

The spelling of 22691680 in words is "twenty-two million, six hundred ninety-one thousand, six hundred eighty".