22890540 has 24 divisors (see below), whose sum is σ = 64093680. Its totient is φ = 6104128.

The previous prime is 22890529. The next prime is 22890563. The reversal of 22890540 is 4509822.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22890498 and 22890507.

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 7 ways as a sum of consecutive naturals, for example, 190695 + ... + 190814.

It is an arithmetic number, because the mean of its divisors is an integer number (2670570).

Almost surely, 2^22890540 is an apocalyptic number.

22890540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22890540 is an abundant number, since it is smaller than the sum of its proper divisors (41203140).

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

22890540 is a wasteful number, since it uses less digits than its factorization.

22890540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381521 (or 381519 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22890540 is about 4784.4059192339. The cubic root of 22890540 is about 283.9348359386.

The spelling of 22890540 in words is "twenty-two million, eight hundred ninety thousand, five hundred forty".