22706490 has 32 divisors (see below), whose sum is σ = 54639360. Its totient is φ = 6039104.

The previous prime is 22706483. The next prime is 22706491. The reversal of 22706490 is 9460722.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22706491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14527 + ... + 16013.

It is an arithmetic number, because the mean of its divisors is an integer number (1707480).

Almost surely, 2^22706490 is an apocalyptic number.

22706490 is an abundant number, since it is smaller than the sum of its proper divisors (31932870).

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

22706490 is a wasteful number, since it uses less digits than its factorization.

22706490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 22706490 is about 4765.1327368710. The cubic root of 22706490 is about 283.1718002739.

The spelling of 22706490 in words is "twenty-two million, seven hundred six thousand, four hundred ninety".