258437040 has 40 divisors (see below), whose sum is σ = 801155568. Its totient is φ = 68916480.

The previous prime is 258437027. The next prime is 258437041. The reversal of 258437040 is 40734852.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 258436992 and 258437010.

It is not an unprimeable number, because it can be changed into a prime (258437041) 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, 538171 + ... + 538650.

Almost surely, 2^258437040 is an apocalyptic number.

258437040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258437040 is an abundant number, since it is smaller than the sum of its proper divisors (542718528).

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

258437040 is a wasteful number, since it uses less digits than its factorization.

258437040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076837 (or 1076831 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 258437040 is about 16075.9771087172. The cubic root of 258437040 is about 636.9689356554.

The spelling of 258437040 in words is "two hundred fifty-eight million, four hundred thirty-seven thousand, forty".