247485312 has 48 divisors (see below), whose sum is σ = 712168080. Its totient is φ = 82494720.

The previous prime is 247485299. The next prime is 247485361. The reversal of 247485312 is 213584742.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×247485312² = 122497959311474688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106264 + ... + 108567.

It is an arithmetic number, because the mean of its divisors is an integer number (14836835).

Almost surely, 2^247485312 is an apocalyptic number.

It is an amenable number.

247485312 is an abundant number, since it is smaller than the sum of its proper divisors (464682768).

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

247485312 is a wasteful number, since it uses less digits than its factorization.

247485312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214851 (or 214836 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 247485312 is about 15731.6659003425. The cubic root of 247485312 is about 627.8411974901.

The spelling of 247485312 in words is "two hundred forty-seven million, four hundred eighty-five thousand, three hundred twelve".