247144490 has 8 divisors (see below), whose sum is σ = 444860100. Its totient is φ = 98857792.

The previous prime is 247144481. The next prime is 247144501. The reversal of 247144490 is 94441742.

247144490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 241895809 + 5248681 = 15553^2 + 2291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×247144490² = 122160797874720200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 247144490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12357215 + ... + 12357234.

Almost surely, 2^247144490 is an apocalyptic number.

247144490 is a deficient number, since it is larger than the sum of its proper divisors (197715610).

247144490 is a wasteful number, since it uses less digits than its factorization.

247144490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24714456.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 247144490 is about 15720.8298127039. The cubic root of 247144490 is about 627.5528566133.

The spelling of 247144490 in words is "two hundred forty-seven million, one hundred forty-four thousand, four hundred ninety".