258729492 has 24 divisors (see below), whose sum is σ = 689945536. Its totient is φ = 73922688.

The previous prime is 258729481. The next prime is 258729521. The reversal of 258729492 is 294927852.

It is an alternating number because its digits alternate between even and odd.

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, 1539973 + ... + 1540140.

Almost surely, 2^258729492 is an apocalyptic number.

It is an amenable number.

258729492 is an abundant number, since it is smaller than the sum of its proper divisors (431216044).

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

258729492 is a wasteful number, since it uses less digits than its factorization.

258729492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080127 (or 3080125 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 258729492 is about 16085.0704692270. The cubic root of 258729492 is about 637.2091135808.

The spelling of 258729492 in words is "two hundred fifty-eight million, seven hundred twenty-nine thousand, four hundred ninety-two".