20258870 has 8 divisors (see below), whose sum is σ = 36465984. Its totient is φ = 8103544.

The previous prime is 20258867. The next prime is 20258873. The reversal of 20258870 is 7885202.

It is an interprime number because it is at equal distance from previous prime (20258867) and next prime (20258873).

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

It is a super-3 number, since 3×20258870³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20258873) 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, 1012934 + ... + 1012953.

It is an arithmetic number, because the mean of its divisors is an integer number (4558248).

Almost surely, 2^20258870 is an apocalyptic number.

20258870 is a deficient number, since it is larger than the sum of its proper divisors (16207114).

20258870 is a wasteful number, since it uses less digits than its factorization.

20258870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025894.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 20258870 is about 4500.9854476548. The cubic root of 20258870 is about 272.6078802999.

The spelling of 20258870 in words is "twenty million, two hundred fifty-eight thousand, eight hundred seventy".