247874072240 has 20 divisors (see below), whose sum is σ = 576307218144. Its totient is φ = 99149628864.

The previous prime is 247874072207. The next prime is 247874072249. The reversal of 247874072240 is 42270478742.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×247874072240² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247874072249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549212872 + ... + 1549213031.

Almost surely, 2^247874072240 is an apocalyptic number.

247874072240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247874072240 is an abundant number, since it is smaller than the sum of its proper divisors (328433145904).

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

247874072240 is a wasteful number, since it uses less digits than its factorization.

247874072240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098425916 (or 3098425910 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 47.

The spelling of 247874072240 in words is "two hundred forty-seven billion, eight hundred seventy-four million, seventy-two thousand, two hundred forty".