247242516 has 96 divisors (see below), whose sum is σ = 639542400. Its totient is φ = 74027520.

The previous prime is 247242511. The next prime is 247242517. The reversal of 247242516 is 615242742.

It is a super-2 number, since 2×247242516² = 122257723436020512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247242511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403026 + ... + 403638.

It is an arithmetic number, because the mean of its divisors is an integer number (6661900).

Almost surely, 2^247242516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247242516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319771200).

247242516 is an abundant number, since it is smaller than the sum of its proper divisors (392299884).

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

247242516 is a wasteful number, since it uses less digits than its factorization.

247242516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 247242516 is about 15723.9472143606. The cubic root of 247242516 is about 627.6358153242.

The spelling of 247242516 in words is "two hundred forty-seven million, two hundred forty-two thousand, five hundred sixteen".