258545940 has 48 divisors (see below), whose sum is σ = 725182080. Its totient is φ = 68826240.

The previous prime is 258545897. The next prime is 258545957. The reversal of 258545940 is 49545852.

It is a junction number, because it is equal to n+sod(n) for n = 258545892 and 258545901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34446 + ... + 41274.

It is an arithmetic number, because the mean of its divisors is an integer number (15107960).

Almost surely, 2^258545940 is an apocalyptic number.

258545940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258545940 is an abundant number, since it is smaller than the sum of its proper divisors (466636140).

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

258545940 is a wasteful number, since it uses less digits than its factorization.

258545940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472 (or 7470 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 258545940 is about 16079.3637933844. The cubic root of 258545940 is about 637.0583915841.

The spelling of 258545940 in words is "two hundred fifty-eight million, five hundred forty-five thousand, nine hundred forty".