258431948 has 6 divisors (see below), whose sum is σ = 452255916. Its totient is φ = 129215972.

The previous prime is 258431879. The next prime is 258431951. The reversal of 258431948 is 849134852.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 258431899 and 258431908.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32303990 + ... + 32303997.

It is an arithmetic number, because the mean of its divisors is an integer number (75375986).

Almost surely, 2^258431948 is an apocalyptic number.

It is an amenable number.

258431948 is a deficient number, since it is larger than the sum of its proper divisors (193823968).

258431948 is a wasteful number, since it uses less digits than its factorization.

258431948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64607991 (or 64607989 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 258431948 is about 16075.8187349821. The cubic root of 258431948 is about 636.9647522160.

The spelling of 258431948 in words is "two hundred fifty-eight million, four hundred thirty-one thousand, nine hundred forty-eight".