247378824 has 96 divisors (see below), whose sum is σ = 835323840. Its totient is φ = 64252800.

The previous prime is 247378819. The next prime is 247378829. The reversal of 247378824 is 428873742.

247378824 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (247378819) and next prime (247378829).

It is a super-2 number, since 2×247378824² = 122392565127245952, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 247378824.

It is not an unprimeable number, because it can be changed into a prime (247378829) 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, 16767 + ... + 27854.

It is an arithmetic number, because the mean of its divisors is an integer number (8701290).

Almost surely, 2^247378824 is an apocalyptic number.

247378824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

247378824 is an abundant number, since it is smaller than the sum of its proper divisors (587945016).

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

247378824 is a wasteful number, since it uses less digits than its factorization.

247378824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44651 (or 44644 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 247378824 is about 15728.2810249563. The cubic root of 247378824 is about 627.7511353846.

The spelling of 247378824 in words is "two hundred forty-seven million, three hundred seventy-eight thousand, eight hundred twenty-four".