247738560 has 56 divisors (see below), whose sum is σ = 786572976. Its totient is φ = 66063360.

The previous prime is 247738553. The next prime is 247738573. The reversal of 247738560 is 65837742.

247738560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247738560² = 122748788221747200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 128071 + ... + 129990.

It is an arithmetic number, because the mean of its divisors is an integer number (14045946).

Almost surely, 2^247738560 is an apocalyptic number.

247738560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247738560 is an abundant number, since it is smaller than the sum of its proper divisors (538834416).

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

247738560 is a wasteful number, since it uses less digits than its factorization.

247738560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258081 (or 258071 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 247738560 is about 15739.7128309255. The cubic root of 247738560 is about 628.0552779719.

It can be divided in two parts, 24773 and 8560, that added together give a palindrome (33333).

The spelling of 247738560 in words is "two hundred forty-seven million, seven hundred thirty-eight thousand, five hundred sixty".