22685280 has 96 divisors (see below), whose sum is σ = 72140544. Its totient is φ = 5991936.

The previous prime is 22685263. The next prime is 22685309. The reversal of 22685280 is 8258622.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80019 + ... + 80301.

It is an arithmetic number, because the mean of its divisors is an integer number (751464).

Almost surely, 2^22685280 is an apocalyptic number.

22685280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22685280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36070272).

22685280 is an abundant number, since it is smaller than the sum of its proper divisors (49455264).

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

22685280 is a wasteful number, since it uses less digits than its factorization.

22685280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 22685280 is about 4762.9066755501. The cubic root of 22685280 is about 283.0836030972.

The spelling of 22685280 in words is "twenty-two million, six hundred eighty-five thousand, two hundred eighty".