22720258 has 8 divisors (see below), whose sum is σ = 37178640. Its totient is φ = 10327380.

The previous prime is 22720237. The next prime is 22720261. The reversal of 22720258 is 85202722.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516348 + ... + 516391.

It is an arithmetic number, because the mean of its divisors is an integer number (4647330).

Almost surely, 2^22720258 is an apocalyptic number.

22720258 is a deficient number, since it is larger than the sum of its proper divisors (14458382).

22720258 is a wasteful number, since it uses less digits than its factorization.

22720258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032752.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 22720258 is about 4766.5771786472. The cubic root of 22720258 is about 283.2290221170.

The spelling of 22720258 in words is "twenty-two million, seven hundred twenty thousand, two hundred fifty-eight".