258550020 has 72 divisors (see below), whose sum is σ = 785925504. Its totient is φ = 68801088.

The previous prime is 258550009. The next prime is 258550021. The reversal of 258550020 is 20055852.

It is a super-2 number, since 2×258550020² = 133696225684000800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (258550021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104437 + ... + 106883.

It is an arithmetic number, because the mean of its divisors is an integer number (10915632).

Almost surely, 2^258550020 is an apocalyptic number.

258550020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258550020 is an abundant number, since it is smaller than the sum of its proper divisors (527375484).

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

258550020 is a wasteful number, since it uses less digits than its factorization.

258550020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 258550020 is about 16079.4906635751. The cubic root of 258550020 is about 637.0617426128.

The spelling of 258550020 in words is "two hundred fifty-eight million, five hundred fifty thousand, twenty".