22510490 has 8 divisors (see below), whose sum is σ = 40518900. Its totient is φ = 9004192.

The previous prime is 22510451. The next prime is 22510493. The reversal of 22510490 is 9401522.

It can be written as a sum of positive squares in 2 ways, for example, as 22193521 + 316969 = 4711^2 + 563^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22510493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125515 + ... + 1125534.

Almost surely, 2^22510490 is an apocalyptic number.

22510490 is a deficient number, since it is larger than the sum of its proper divisors (18008410).

22510490 is a wasteful number, since it uses less digits than its factorization.

22510490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251056.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 22510490 is about 4744.5221044906. The cubic root of 22510490 is about 282.3546750387.

The spelling of 22510490 in words is "twenty-two million, five hundred ten thousand, four hundred ninety".