247464285 has 8 divisors (see below), whose sum is σ = 395942880. Its totient is φ = 131980944.

The previous prime is 247464281. The next prime is 247464293. The reversal of 247464285 is 582464742.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247464285 - 2² = 247464281 is a prime.

It is a super-2 number, since 2×247464285² = 122477144701122450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247464281) 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 7 ways as a sum of consecutive naturals, for example, 8248795 + ... + 8248824.

It is an arithmetic number, because the mean of its divisors is an integer number (49492860).

Almost surely, 2^247464285 is an apocalyptic number.

It is an amenable number.

247464285 is a deficient number, since it is larger than the sum of its proper divisors (148478595).

247464285 is a wasteful number, since it uses less digits than its factorization.

247464285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16497627.

The product of its digits is 430080, while the sum is 42.

The square root of 247464285 is about 15730.9975843873. The cubic root of 247464285 is about 627.8234159759.

The spelling of 247464285 in words is "two hundred forty-seven million, four hundred sixty-four thousand, two hundred eighty-five".