247890733 has 2 divisors, whose sum is σ = 247890734. Its totient is φ = 247890732.

The previous prime is 247890707. The next prime is 247890751. The reversal of 247890733 is 337098742.

247890733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160224964 + 87665769 = 12658^2 + 9363^2 .

It is a cyclic number.

It is not a de Polignac number, because 247890733 - 2⁹ = 247890221 is a prime.

It is a super-2 number, since 2×247890733² = 122899631014554578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247890733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247890133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123945366 + 123945367.

It is an arithmetic number, because the mean of its divisors is an integer number (123945367).

Almost surely, 2^247890733 is an apocalyptic number.

It is an amenable number.

247890733 is a deficient number, since it is larger than the sum of its proper divisors (1).

247890733 is an equidigital number, since it uses as much as digits as its factorization.

247890733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 247890733 is about 15744.5461350907. The cubic root of 247890733 is about 628.1838456226.

The spelling of 247890733 in words is "two hundred forty-seven million, eight hundred ninety thousand, seven hundred thirty-three".