22256490 has 16 divisors (see below), whose sum is σ = 53415648. Its totient is φ = 5935056.

The previous prime is 22256483. The next prime is 22256501. The reversal of 22256490 is 9465222.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 741883 = 22256490 / (2 + 2 + 2 + 5 + 6 + 4 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370912 + ... + 370971.

It is an arithmetic number, because the mean of its divisors is an integer number (3338478).

Almost surely, 2^22256490 is an apocalyptic number.

22256490 is an abundant number, since it is smaller than the sum of its proper divisors (31159158).

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

22256490 is a wasteful number, since it uses less digits than its factorization.

22256490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741893.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 22256490 is about 4717.6784544943. The cubic root of 22256490 is about 281.2886603646.

The spelling of 22256490 in words is "twenty-two million, two hundred fifty-six thousand, four hundred ninety".