247123872 has 120 divisors (see below), whose sum is σ = 738150336. Its totient is φ = 81088128.

The previous prime is 247123867. The next prime is 247123879. The reversal of 247123872 is 278321742.

It is a super-2 number, since 2×247123872² = 122140416224544768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (247123879) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 172953 + ... + 174375.

Almost surely, 2^247123872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247123872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369075168).

247123872 is an abundant number, since it is smaller than the sum of its proper divisors (491026464).

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

247123872 is a wasteful number, since it uses less digits than its factorization.

247123872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1495 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 247123872 is about 15720.1740448381. The cubic root of 247123872 is about 627.5354049535.

The spelling of 247123872 in words is "two hundred forty-seven million, one hundred twenty-three thousand, eight hundred seventy-two".