23400402 has 8 divisors (see below), whose sum is σ = 46800816. Its totient is φ = 7800132.

The previous prime is 23400397. The next prime is 23400413. The reversal of 23400402 is 20400432.

It is a happy number.

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

23400402 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1950028 + ... + 1950039.

It is an arithmetic number, because the mean of its divisors is an integer number (5850102).

Almost surely, 2^23400402 is an apocalyptic number.

23400402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23400402 is a wasteful number, since it uses less digits than its factorization.

23400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900072.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 23400402 is about 4837.3962004368. The cubic root of 23400402 is about 286.0274885148.

Adding to 23400402 its reverse (20400432), we get a palindrome (43800834).

The spelling of 23400402 in words is "twenty-three million, four hundred thousand, four hundred two".