247278960 has 160 divisors (see below), whose sum is σ = 857088000. Its totient is φ = 65528064.

The previous prime is 247278953. The next prime is 247279031. The reversal of 247278960 is 69872742.

It is a super-2 number, since 2×247278960² = 122293768117363200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 516001 + ... + 516479.

It is an arithmetic number, because the mean of its divisors is an integer number (5356800).

Almost surely, 2^247278960 is an apocalyptic number.

247278960 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 247278960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428544000).

247278960 is an abundant number, since it is smaller than the sum of its proper divisors (609809040).

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

247278960 is a wasteful number, since it uses less digits than its factorization.

247278960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 247278960 is about 15725.1060409779. The cubic root of 247278960 is about 627.6666520323. Note that the first 4 decimals are identical.

The spelling of 247278960 in words is "two hundred forty-seven million, two hundred seventy-eight thousand, nine hundred sixty".