247242492 has 72 divisors (see below), whose sum is σ = 756284256. Its totient is φ = 66484224.

The previous prime is 247242491. The next prime is 247242503. The reversal of 247242492 is 294242742.

It is a super-2 number, since 2×247242492² = 122257699700740128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247242491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24573 + ... + 33140.

It is an arithmetic number, because the mean of its divisors is an integer number (10503948).

Almost surely, 2^247242492 is an apocalyptic number.

It is an amenable number.

247242492 is an abundant number, since it is smaller than the sum of its proper divisors (509041764).

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

247242492 is a wasteful number, since it uses less digits than its factorization.

247242492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57747 (or 57742 counting only the distinct ones).

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

The square root of 247242492 is about 15723.9464511935. The cubic root of 247242492 is about 627.6357950159.

The spelling of 247242492 in words is "two hundred forty-seven million, two hundred forty-two thousand, four hundred ninety-two".