247142624 has 12 divisors (see below), whose sum is σ = 486562104. Its totient is φ = 123571296.

The previous prime is 247142593. The next prime is 247142641. The reversal of 247142624 is 426241742.

247142624 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247142624² = 122158953195210752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 7723207 = 247142624 / (2 + 4 + 7 + 1 + 4 + 2 + 6 + 2 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3861572 + ... + 3861635.

It is an arithmetic number, because the mean of its divisors is an integer number (40546842).

Almost surely, 2^247142624 is an apocalyptic number.

It is an amenable number.

247142624 is a deficient number, since it is larger than the sum of its proper divisors (239419480).

247142624 is an equidigital number, since it uses as much as digits as its factorization.

247142624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723217 (or 7723209 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 247142624 is about 15720.7704645797. The cubic root of 247142624 is about 627.5512772179.

The spelling of 247142624 in words is "two hundred forty-seven million, one hundred forty-two thousand, six hundred twenty-four".