247421352 has 64 divisors (see below), whose sum is σ = 632563200. Its totient is φ = 80625600.

The previous prime is 247421329. The next prime is 247421357. The reversal of 247421352 is 253124742.

It is a super-2 number, since 2×247421352² = 122434650851015808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247421357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242299 + ... + 243317.

It is an arithmetic number, because the mean of its divisors is an integer number (9883800).

Almost surely, 2^247421352 is an apocalyptic number.

It is an amenable number.

247421352 is an abundant number, since it is smaller than the sum of its proper divisors (385141848).

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

247421352 is a wasteful number, since it uses less digits than its factorization.

247421352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1242 counting only the distinct ones).

The product of its digits is 13440, while the sum is 30.

The square root of 247421352 is about 15729.6329264227. The cubic root of 247421352 is about 627.7871064917.

The spelling of 247421352 in words is "two hundred forty-seven million, four hundred twenty-one thousand, three hundred fifty-two".