247828380 has 96 divisors (see below), whose sum is σ = 738642240. Its totient is φ = 61870080.

The previous prime is 247828367. The next prime is 247828409. The reversal of 247828380 is 83828742.

It is a super-2 number, since 2×247828380² = 122837811866848800, 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 31 ways as a sum of consecutive naturals, for example, 233050 + ... + 234110.

It is an arithmetic number, because the mean of its divisors is an integer number (7694190).

Almost surely, 2^247828380 is an apocalyptic number.

247828380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247828380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369321120).

247828380 is an abundant number, since it is smaller than the sum of its proper divisors (490813860).

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

247828380 is a wasteful number, since it uses less digits than its factorization.

247828380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 247828380 is about 15742.5658645597. The cubic root of 247828380 is about 628.1311712965.

The spelling of 247828380 in words is "two hundred forty-seven million, eight hundred twenty-eight thousand, three hundred eighty".