247090 has 8 divisors (see below), whose sum is σ = 444780. Its totient is φ = 98832.

The previous prime is 247087. The next prime is 247099. The reversal of 247090 is 90742.

247090 is digitally balanced in base 2, 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 247009 + 81 = 497^2 + 9^2 .

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

It is a super-2 number, since 2×247090² = 122106936200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12345 + ... + 12364.

2²⁴⁷⁰⁹⁰ is an apocalyptic number.

247090 is a deficient number, since it is larger than the sum of its proper divisors (197690).

247090 is a wasteful number, since it uses less digits than its factorization.

247090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24716.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 247090 is about 497.0814822542. The cubic root of 247090 is about 62.7506732625.

The spelling of 247090 in words is "two hundred forty-seven thousand, ninety".