23782057 has 4 divisors (see below), whose sum is σ = 25611460. Its totient is φ = 21952656.

The previous prime is 23782051. The next prime is 23782061. The reversal of 23782057 is 75028732.

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 15085456 + 8696601 = 3884^2 + 2949^2 .

It is a cyclic number.

It is not a de Polignac number, because 23782057 - 2³ = 23782049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23782051) by changing a digit.

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, 914682 + ... + 914707.

It is an arithmetic number, because the mean of its divisors is an integer number (6402865).

Almost surely, 2^23782057 is an apocalyptic number.

It is an amenable number.

23782057 is a deficient number, since it is larger than the sum of its proper divisors (1829403).

23782057 is a wasteful number, since it uses less digits than its factorization.

23782057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829402.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 23782057 is about 4876.6850421162. The cubic root of 23782057 is about 287.5741237988.

The spelling of 23782057 in words is "twenty-three million, seven hundred eighty-two thousand, fifty-seven".