20270258 has 16 divisors (see below), whose sum is σ = 30844800. Its totient is φ = 9990000.

The previous prime is 20270251. The next prime is 20270267. The reversal of 20270258 is 85207202.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20270251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74663 + ... + 74933.

It is an arithmetic number, because the mean of its divisors is an integer number (1927800).

Almost surely, 2^20270258 is an apocalyptic number.

20270258 is a deficient number, since it is larger than the sum of its proper divisors (10574542).

20270258 is a wasteful number, since it uses less digits than its factorization.

20270258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20270258 is about 4502.2503262258. The cubic root of 20270258 is about 272.6589505558.

The spelling of 20270258 in words is "twenty million, two hundred seventy thousand, two hundred fifty-eight".