258077240 has 16 divisors (see below), whose sum is σ = 580673880. Its totient is φ = 103230880.

The previous prime is 258077207. The next prime is 258077249. The reversal of 258077240 is 42770852.

It is a self number, because there is not a number n which added to its sum of digits gives 258077240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258077249) 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, 3225926 + ... + 3226005.

Almost surely, 2^258077240 is an apocalyptic number.

258077240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258077240 is an abundant number, since it is smaller than the sum of its proper divisors (322596640).

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

258077240 is a wasteful number, since it uses less digits than its factorization.

258077240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451942 (or 6451938 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 258077240 is about 16064.7826004587. The cubic root of 258077240 is about 636.6731990716.

The spelling of 258077240 in words is "two hundred fifty-eight million, seventy-seven thousand, two hundred forty".