247464312 has 64 divisors (see below), whose sum is σ = 643589760. Its totient is φ = 79228800.

The previous prime is 247464307. The next prime is 247464317. The reversal of 247464312 is 213464742.

It is an interprime number because it is at equal distance from previous prime (247464307) and next prime (247464317).

It is a super-2 number, since 2×247464312² = 122477171427266688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247464317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60987 + ... + 64917.

It is an arithmetic number, because the mean of its divisors is an integer number (10056090).

Almost surely, 2^247464312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247464312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321794880).

247464312 is an abundant number, since it is smaller than the sum of its proper divisors (396125448).

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

247464312 is a wasteful number, since it uses less digits than its factorization.

247464312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044 (or 4040 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 247464312 is about 15730.9984425656. The cubic root of 247464312 is about 627.8234388092.

The spelling of 247464312 in words is "two hundred forty-seven million, four hundred sixty-four thousand, three hundred twelve".