247423858 has 16 divisors (see below), whose sum is σ = 405238464. Its totient is φ = 112364560.

The previous prime is 247423837. The next prime is 247423859. The reversal of 247423858 is 858324742.

It is a super-2 number, since 2×247423858² = 122437131015208328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247423859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23691 + ... + 32497.

It is an arithmetic number, because the mean of its divisors is an integer number (25327404).

Almost surely, 2^247423858 is an apocalyptic number.

247423858 is a deficient number, since it is larger than the sum of its proper divisors (157814606).

247423858 is a wasteful number, since it uses less digits than its factorization.

247423858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10097.

The product of its digits is 430080, while the sum is 43.

The square root of 247423858 is about 15729.7125847868. The cubic root of 247423858 is about 627.7892259924.

The spelling of 247423858 in words is "two hundred forty-seven million, four hundred twenty-three thousand, eight hundred fifty-eight".