258845780 has 24 divisors (see below), whose sum is σ = 547230600. Its totient is φ = 102842240.

The previous prime is 258845777. The next prime is 258845789. The reversal of 258845780 is 87548852.

It can be written as a sum of positive squares in 4 ways, for example, as 4251844 + 254593936 = 2062^2 + 15956^2 .

It is a super-2 number, since 2×258845780² = 134002275647616800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258845789) 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, 40451 + ... + 46410.

It is an arithmetic number, because the mean of its divisors is an integer number (22801275).

Almost surely, 2^258845780 is an apocalyptic number.

258845780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258845780 is an abundant number, since it is smaller than the sum of its proper divisors (288384820).

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

258845780 is a wasteful number, since it uses less digits than its factorization.

258845780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87019 (or 87017 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 47.

The square root of 258845780 is about 16088.6848437030. The cubic root of 258845780 is about 637.3045654934.

The spelling of 258845780 in words is "two hundred fifty-eight million, eight hundred forty-five thousand, seven hundred eighty".