247408272 has 120 divisors (see below), whose sum is σ = 752610560. Its totient is φ = 75582720.

The previous prime is 247408237. The next prime is 247408277. The reversal of 247408272 is 272804742.

247408272 is a `hidden beast` number, since 247 + 408 + 2 + 7 + 2 = 666.

247408272 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 2×247408272² = 122421706108051968, 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 (247408277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83358 + ... + 86274.

Almost surely, 2^247408272 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 247408272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376305280).

247408272 is an abundant number, since it is smaller than the sum of its proper divisors (505202288).

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

247408272 is a wasteful number, since it uses less digits than its factorization.

247408272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 247408272 is about 15729.2171451729. The cubic root of 247408272 is about 627.7760435823.

The spelling of 247408272 in words is "two hundred forty-seven million, four hundred eight thousand, two hundred seventy-two".