258641390 has 16 divisors (see below), whose sum is σ = 532062432. Its totient is φ = 88677024.

The previous prime is 258641377. The next prime is 258641429. The reversal of 258641390 is 93146852.

It is a happy number.

It is a super-3 number, since 3×258641390³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1847369 + ... + 1847508.

It is an arithmetic number, because the mean of its divisors is an integer number (33253902).

Almost surely, 2^258641390 is an apocalyptic number.

258641390 is an abundant number, since it is smaller than the sum of its proper divisors (273421042).

258641390 is a wasteful number, since it uses less digits than its factorization.

258641390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694891.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 258641390 is about 16082.3316095646. The cubic root of 258641390 is about 637.1367783524.

It can be divided in two parts, 25864 and 1390, that multiplied together give a triangular number (35950960 = T₈₄₇₉).

The spelling of 258641390 in words is "two hundred fifty-eight million, six hundred forty-one thousand, three hundred ninety".