258344387 has 32 divisors (see below), whose sum is σ = 321024000. Its totient is φ = 202976928.

The previous prime is 258344381. The next prime is 258344447. The reversal of 258344387 is 783443852.

258344387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 258344387 - 2¹⁰ = 258343363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258344381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1137968 + ... + 1138194.

It is an arithmetic number, because the mean of its divisors is an integer number (10032000).

Almost surely, 2^258344387 is an apocalyptic number.

258344387 is a deficient number, since it is larger than the sum of its proper divisors (62679613).

258344387 is a wasteful number, since it uses less digits than its factorization.

258344387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495.

The product of its digits is 645120, while the sum is 44.

The square root of 258344387 is about 16073.0951281948. The cubic root of 258344387 is about 636.8928060405.

The spelling of 258344387 in words is "two hundred fifty-eight million, three hundred forty-four thousand, three hundred eighty-seven".