247828280 has 48 divisors (see below), whose sum is σ = 648657720. Its totient is φ = 84969024.

The previous prime is 247828249. The next prime is 247828303. The reversal of 247828280 is 82828742.

It is a super-2 number, since 2×247828280² = 122837712735516800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61262 + ... + 65181.

Almost surely, 2^247828280 is an apocalyptic number.

247828280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247828280 is an abundant number, since it is smaller than the sum of its proper divisors (400829440).

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

247828280 is a wasteful number, since it uses less digits than its factorization.

247828280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126468 (or 126457 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 247828280 is about 15742.5626884570. The cubic root of 247828280 is about 628.1310868118.

The spelling of 247828280 in words is "two hundred forty-seven million, eight hundred twenty-eight thousand, two hundred eighty".