247398858 has 48 divisors (see below), whose sum is σ = 648648000. Its totient is φ = 66526848.

The previous prime is 247398857. The next prime is 247398911. The reversal of 247398858 is 858893742.

It is a happy number.

247398858 is a `hidden beast` number, since 2 + 473 + 98 + 85 + 8 = 666.

247398858 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247398858² = 122412389879408328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247398857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55608 + ... + 59891.

It is an arithmetic number, because the mean of its divisors is an integer number (13513500).

Almost surely, 2^247398858 is an apocalyptic number.

247398858 is an abundant number, since it is smaller than the sum of its proper divisors (401249142).

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

247398858 is a wasteful number, since it uses less digits than its factorization.

247398858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115531 (or 115528 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 247398858 is about 15728.9178903064. The cubic root of 247398858 is about 627.7680810910.

The spelling of 247398858 in words is "two hundred forty-seven million, three hundred ninety-eight thousand, eight hundred fifty-eight".