247484745 has 24 divisors (see below), whose sum is σ = 430702272. Its totient is φ = 131460000.

The previous prime is 247484729. The next prime is 247484767. The reversal of 247484745 is 547484742.

It is not a de Polignac number, because 247484745 - 2⁴ = 247484729 is a prime.

It is a super-2 number, since 2×247484745² = 122497398015430050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 247484745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (17945928).

Almost surely, 2^247484745 is an apocalyptic number.

It is an amenable number.

247484745 is a deficient number, since it is larger than the sum of its proper divisors (183217527).

247484745 is a wasteful number, since it uses less digits than its factorization.

247484745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22173 (or 22170 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 45.

The square root of 247484745 is about 15731.6478793545. The cubic root of 247484745 is about 627.8407180189.

The spelling of 247484745 in words is "two hundred forty-seven million, four hundred eighty-four thousand, seven hundred forty-five".