23690493 has 6 divisors (see below), whose sum is σ = 34219614. Its totient is φ = 15793656.

The previous prime is 23690467. The next prime is 23690519. The reversal of 23690493 is 39409632.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23690467) and next prime (23690519).

It can be written as a sum of positive squares in only one way, i.e., 20958084 + 2732409 = 4578^2 + 1653^2 .

It is not a de Polignac number, because 23690493 - 2⁵ = 23690461 is a prime.

It is a super-2 number, since 2×23690493² = 1122478917166098, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23690393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1316130 + ... + 1316147.

It is an arithmetic number, because the mean of its divisors is an integer number (5703269).

Almost surely, 2^23690493 is an apocalyptic number.

It is an amenable number.

23690493 is a deficient number, since it is larger than the sum of its proper divisors (10529121).

23690493 is a wasteful number, since it uses less digits than its factorization.

23690493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632283 (or 2632280 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 23690493 is about 4867.2880539372. The cubic root of 23690493 is about 287.2045832570.

The spelling of 23690493 in words is "twenty-three million, six hundred ninety thousand, four hundred ninety-three".