22345740 has 48 divisors (see below), whose sum is σ = 69521760. Its totient is φ = 5958720.

The previous prime is 22345723. The next prime is 22345751. The reversal of 22345740 is 4754322.

It is a super-2 number, since 2×22345740² = 998664192295200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20151 + ... + 21230.

It is an arithmetic number, because the mean of its divisors is an integer number (1448370).

Almost surely, 2^22345740 is an apocalyptic number.

22345740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22345740 is an abundant number, since it is smaller than the sum of its proper divisors (47176020).

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

22345740 is a wasteful number, since it uses less digits than its factorization.

22345740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41399 (or 41391 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 22345740 is about 4727.1280921930. The cubic root of 22345740 is about 281.6641542828.

The spelling of 22345740 in words is "twenty-two million, three hundred forty-five thousand, seven hundred forty".