22385340 has 36 divisors (see below), whose sum is σ = 67902744. Its totient is φ = 5969376.

The previous prime is 22385323. The next prime is 22385347. The reversal of 22385340 is 4358322.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×22385340² = 1002206893831200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22385347) 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 11 ways as a sum of consecutive naturals, for example, 62002 + ... + 62361.

Almost surely, 2^22385340 is an apocalyptic number.

22385340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22385340 is an abundant number, since it is smaller than the sum of its proper divisors (45517404).

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

22385340 is a wasteful number, since it uses less digits than its factorization.

22385340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124378 (or 124373 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 22385340 is about 4731.3148278253. The cubic root of 22385340 is about 281.8304397910.

The spelling of 22385340 in words is "twenty-two million, three hundred eighty-five thousand, three hundred forty".