381207258 has 24 divisors (see below), whose sum is σ = 846095796. Its totient is φ = 123969600.

The previous prime is 381207251. The next prime is 381207283. The reversal of 381207258 is 852702183.

381207258 is a `hidden beast` number, since 381 + 20 + 7 + 258 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 338081769 + 43125489 = 18387^2 + 6567^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381207251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257533 + ... + 259008.

Almost surely, 2^381207258 is an apocalyptic number.

381207258 is an abundant number, since it is smaller than the sum of its proper divisors (464888538).

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

381207258 is a wasteful number, since it uses less digits than its factorization.

381207258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516590 (or 516587 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 381207258 is about 19524.5296486241. The cubic root of 381207258 is about 725.0818824679.

The spelling of 381207258 in words is "three hundred eighty-one million, two hundred seven thousand, two hundred fifty-eight".