2390261 has 4 divisors (see below), whose sum is σ = 2412300. Its totient is φ = 2368224.

The previous prime is 2390249. The next prime is 2390263. The reversal of 2390261 is 1620932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 244036 = 1465^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2390261 - 2⁶ = 2390197 is a prime.

It is a d-powerful number, because it can be written as 2³ + 3¹¹ + 9⁶ + 0 + 2¹¹ + 6⁸ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2390263) 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, 10856 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (603075).

2^2390261 is an apocalyptic number.

It is an amenable number.

2390261 is a deficient number, since it is larger than the sum of its proper divisors (22039).

2390261 is a wasteful number, since it uses less digits than its factorization.

2390261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22038.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2390261 is about 1546.0468945022. The cubic root of 2390261 is about 133.7052442911.

The spelling of 2390261 in words is "two million, three hundred ninety thousand, two hundred sixty-one".