22458740 has 12 divisors (see below), whose sum is σ = 47163396. Its totient is φ = 8983488.

The previous prime is 22458719. The next prime is 22458749. The reversal of 22458740 is 4785422.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 11316496 = 3338^2 + 3364^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22458697 and 22458706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22458749) 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 3 ways as a sum of consecutive naturals, for example, 561449 + ... + 561488.

It is an arithmetic number, because the mean of its divisors is an integer number (3930283).

Almost surely, 2^22458740 is an apocalyptic number.

22458740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22458740 is an abundant number, since it is smaller than the sum of its proper divisors (24704656).

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

22458740 is a wasteful number, since it uses less digits than its factorization.

22458740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122946 (or 1122944 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 22458740 is about 4739.0653086869. The cubic root of 22458740 is about 282.1381379789.

The spelling of 22458740 in words is "twenty-two million, four hundred fifty-eight thousand, seven hundred forty".