247488745 has 32 divisors (see below), whose sum is σ = 350558208. Its totient is φ = 164187648.

The previous prime is 247488743. The next prime is 247488749. The reversal of 247488745 is 547884742.

It is not a de Polignac number, because 247488745 - 2¹ = 247488743 is a prime.

It is a super-2 number, since 2×247488745² = 122501357803350050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (247488743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288357 + ... + 289213.

It is an arithmetic number, because the mean of its divisors is an integer number (10954944).

Almost surely, 2^247488745 is an apocalyptic number.

It is an amenable number.

247488745 is a deficient number, since it is larger than the sum of its proper divisors (103069463).

247488745 is a wasteful number, since it uses less digits than its factorization.

247488745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its digits is 2007040, while the sum is 49.

The square root of 247488745 is about 15731.7750111041. The cubic root of 247488745 is about 627.8441005161.

It can be divided in two parts, 2474 and 88745, that added together give a palindrome (91219).

The spelling of 247488745 in words is "two hundred forty-seven million, four hundred eighty-eight thousand, seven hundred forty-five".