247872560 has 40 divisors (see below), whose sum is σ = 620637360. Its totient is φ = 91521792.

The previous prime is 247872557. The next prime is 247872571. The reversal of 247872560 is 65278742.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×247872560² = 122881612001907200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118130 + ... + 120209.

It is an arithmetic number, because the mean of its divisors is an integer number (15515934).

Almost surely, 2^247872560 is an apocalyptic number.

247872560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247872560 is an abundant number, since it is smaller than the sum of its proper divisors (372764800).

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

247872560 is a wasteful number, since it uses less digits than its factorization.

247872560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238365 (or 238359 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 247872560 is about 15743.9690040345. The cubic root of 247872560 is about 628.1684944181.

The spelling of 247872560 in words is "two hundred forty-seven million, eight hundred seventy-two thousand, five hundred sixty".