247893480 has 128 divisors (see below), whose sum is σ = 835920000. Its totient is φ = 65336832.

The previous prime is 247893433. The next prime is 247893487. The reversal of 247893480 is 84398742.

247893480 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 2×247893480² = 122902354853020800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (247893487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94831 + ... + 97409.

It is an arithmetic number, because the mean of its divisors is an integer number (6530625).

Almost surely, 2^247893480 is an apocalyptic number.

247893480 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 247893480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417960000).

247893480 is an abundant number, since it is smaller than the sum of its proper divisors (588026520).

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

247893480 is a wasteful number, since it uses less digits than its factorization.

247893480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 247893480 is about 15744.6333714063. The cubic root of 247893480 is about 628.1861660195.

The spelling of 247893480 in words is "two hundred forty-seven million, eight hundred ninety-three thousand, four hundred eighty".