247042320 has 160 divisors (see below), whose sum is σ = 893395200. Its totient is φ = 56448000.

The previous prime is 247042319. The next prime is 247042339. The reversal of 247042320 is 23240742.

247042320 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 2×247042320² = 122059815741964800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 16.

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, 80820 + ... + 83820.

It is an arithmetic number, because the mean of its divisors is an integer number (5583720).

Almost surely, 2^247042320 is an apocalyptic number.

247042320 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 247042320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446697600).

247042320 is an abundant number, since it is smaller than the sum of its proper divisors (646352880).

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

247042320 is a wasteful number, since it uses less digits than its factorization.

247042320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 247042320 is about 15717.5799663943. The cubic root of 247042320 is about 627.4663675143.

The spelling of 247042320 in words is "two hundred forty-seven million, forty-two thousand, three hundred twenty".