23440402 has 8 divisors (see below), whose sum is σ = 36294912. Its totient is φ = 11342100.

The previous prime is 23440393. The next prime is 23440411. The reversal of 23440402 is 20404432.

It is an interprime number because it is at equal distance from previous prime (23440393) and next prime (23440411).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23440402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188974 + ... + 189097.

It is an arithmetic number, because the mean of its divisors is an integer number (4536864).

Almost surely, 2^23440402 is an apocalyptic number.

23440402 is a deficient number, since it is larger than the sum of its proper divisors (12854510).

23440402 is a wasteful number, since it uses less digits than its factorization.

23440402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378104.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 23440402 is about 4841.5288907534. The cubic root of 23440402 is about 286.1903715668.

Adding to 23440402 its reverse (20404432), we get a palindrome (43844834).

The spelling of 23440402 in words is "twenty-three million, four hundred forty thousand, four hundred two".