22687340 has 48 divisors (see below), whose sum is σ = 52073280. Its totient is φ = 8252160.

The previous prime is 22687331. The next prime is 22687397. The reversal of 22687340 is 4378622.

It is a junction number, because it is equal to n+sod(n) for n = 22687297 and 22687306.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17846 + ... + 19074.

It is an arithmetic number, because the mean of its divisors is an integer number (1084860).

Almost surely, 2^22687340 is an apocalyptic number.

22687340 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 22687340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26036640).

22687340 is an abundant number, since it is smaller than the sum of its proper divisors (29385940).

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

22687340 is a wasteful number, since it uses less digits than its factorization.

22687340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 22687340 is about 4763.1229251406. The cubic root of 22687340 is about 283.0921715694.

The spelling of 22687340 in words is "twenty-two million, six hundred eighty-seven thousand, three hundred forty".