247308472 has 8 divisors (see below), whose sum is σ = 463703400. Its totient is φ = 123654232.

The previous prime is 247308449. The next prime is 247308493. The reversal of 247308472 is 274803742.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×247308472² = 122322960645949568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15456772 + ... + 15456787.

It is an arithmetic number, because the mean of its divisors is an integer number (57962925).

Almost surely, 2^247308472 is an apocalyptic number.

It is an amenable number.

247308472 is a deficient number, since it is larger than the sum of its proper divisors (216394928).

247308472 is a wasteful number, since it uses less digits than its factorization.

247308472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30913565 (or 30913561 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 247308472 is about 15726.0443850321. The cubic root of 247308472 is about 627.6916210813.

The spelling of 247308472 in words is "two hundred forty-seven million, three hundred eight thousand, four hundred seventy-two".