23423402 has 4 divisors (see below), whose sum is σ = 35135106. Its totient is φ = 11711700.

The previous prime is 23423381. The next prime is 23423417. The reversal of 23423402 is 20432432.

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., 22193521 + 1229881 = 4711^2 + 1109^2 .

It is a super-2 number, since 2×23423402² = 1097311522507208, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5855849 + ... + 5855852.

Almost surely, 2^23423402 is an apocalyptic number.

23423402 is a deficient number, since it is larger than the sum of its proper divisors (11711704).

23423402 is a wasteful number, since it uses less digits than its factorization.

23423402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11711703.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 23423402 is about 4839.7729285577. The cubic root of 23423402 is about 286.1211689290.

Adding to 23423402 its reverse (20432432), we get a palindrome (43855834).

The spelling of 23423402 in words is "twenty-three million, four hundred twenty-three thousand, four hundred two".