258450740 has 12 divisors (see below), whose sum is σ = 542746596. Its totient is φ = 103380288.

The previous prime is 258450727. The next prime is 258450763. The reversal of 258450740 is 47054852.

It can be written as a sum of positive squares in 2 ways, for example, as 194546704 + 63904036 = 13948^2 + 7994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 258450740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6461249 + ... + 6461288.

It is an arithmetic number, because the mean of its divisors is an integer number (45228883).

Almost surely, 2^258450740 is an apocalyptic number.

258450740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258450740 is an abundant number, since it is smaller than the sum of its proper divisors (284295856).

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

258450740 is a wasteful number, since it uses less digits than its factorization.

258450740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12922546 (or 12922544 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 258450740 is about 16076.4032046972. The cubic root of 258450740 is about 636.9801909051.

The spelling of 258450740 in words is "two hundred fifty-eight million, four hundred fifty thousand, seven hundred forty".