247240572 has 24 divisors (see below), whose sum is σ = 577154256. Its totient is φ = 82376448.

The previous prime is 247240517. The next prime is 247240589. The reversal of 247240572 is 275042742.

It is a happy number.

It is a super-2 number, since 2×247240572² = 122255800885774368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41578 + ... + 47150.

It is an arithmetic number, because the mean of its divisors is an integer number (24048094).

Almost surely, 2^247240572 is an apocalyptic number.

It is an amenable number.

247240572 is an abundant number, since it is smaller than the sum of its proper divisors (329913684).

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

247240572 is a wasteful number, since it uses less digits than its factorization.

247240572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9277 (or 9275 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 247240572 is about 15723.8853976999. The cubic root of 247240572 is about 627.6341703439.

The spelling of 247240572 in words is "two hundred forty-seven million, two hundred forty thousand, five hundred seventy-two".