258880860 has 240 divisors, whose sum is σ = 954765504. Its totient is φ = 57480192.

The previous prime is 258880837. The next prime is 258880927. The reversal of 258880860 is 68088852.

258880860 is a `hidden beast` number, since 2 + 588 + 8 + 0 + 8 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 419272 + ... + 419888.

Almost surely, 2^258880860 is an apocalyptic number.

258880860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258880860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477382752).

258880860 is an abundant number, since it is smaller than the sum of its proper divisors (695884644).

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

258880860 is a wasteful number, since it uses less digits than its factorization.

258880860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 258880860 is about 16089.7750139646. The cubic root of 258880860 is about 637.3333543657. Note that the first 4 decimals are identical.

The spelling of 258880860 in words is "two hundred fifty-eight million, eight hundred eighty thousand, eight hundred sixty".