247874690 has 32 divisors (see below), whose sum is σ = 511280640. Its totient is φ = 84757824.

The previous prime is 247874681. The next prime is 247874699. The reversal of 247874690 is 96478742.

It is an interprime number because it is at equal distance from previous prime (247874681) and next prime (247874699).

It is a super-2 number, since 2×247874690² = 122883723885192200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (247874699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22679 + ... + 31781.

It is an arithmetic number, because the mean of its divisors is an integer number (15977520).

Almost surely, 2^247874690 is an apocalyptic number.

247874690 is an abundant number, since it is smaller than the sum of its proper divisors (263405950).

247874690 is a wasteful number, since it uses less digits than its factorization.

247874690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 247874690 is about 15744.0366488395. The cubic root of 247874690 is about 628.1702937232.

The spelling of 247874690 in words is "two hundred forty-seven million, eight hundred seventy-four thousand, six hundred ninety".