247222368 has 72 divisors (see below), whose sum is σ = 729100008. Its totient is φ = 82404864.

The previous prime is 247222309. The next prime is 247222387. The reversal of 247222368 is 863222742.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×247222368² = 122237798479054848, 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 11 ways as a sum of consecutive naturals, for example, 8121 + ... + 23672.

It is an arithmetic number, because the mean of its divisors is an integer number (10126389).

Almost surely, 2^247222368 is an apocalyptic number.

It is an amenable number.

247222368 is an abundant number, since it is smaller than the sum of its proper divisors (481877640).

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

247222368 is an equidigital number, since it uses as much as digits as its factorization.

247222368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31818 (or 31798 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 247222368 is about 15723.3065224844. The cubic root of 247222368 is about 627.6187660048.

The spelling of 247222368 in words is "two hundred forty-seven million, two hundred twenty-two thousand, three hundred sixty-eight".