23785738 has 4 divisors (see below), whose sum is σ = 35678610. Its totient is φ = 11892868.

The previous prime is 23785733. The next prime is 23785747. The reversal of 23785738 is 83758732.

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

It can be written as a sum of positive squares in only one way, i.e., 23299929 + 485809 = 4827^2 + 697^2 .

It is a super-2 number, since 2×23785738² = 1131522664409288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23785694 and 23785703.

It is not an unprimeable number, because it can be changed into a prime (23785733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5946433 + ... + 5946436.

Almost surely, 2^23785738 is an apocalyptic number.

23785738 is a deficient number, since it is larger than the sum of its proper divisors (11892872).

23785738 is a wasteful number, since it uses less digits than its factorization.

23785738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892871.

The product of its digits is 282240, while the sum is 43.

The square root of 23785738 is about 4877.0624355241. The cubic root of 23785738 is about 287.5889599942.

The spelling of 23785738 in words is "twenty-three million, seven hundred eighty-five thousand, seven hundred thirty-eight".