23315402 has 16 divisors (see below), whose sum is σ = 39184992. Its totient is φ = 10311120.

The previous prime is 23315387. The next prime is 23315459. The reversal of 23315402 is 20451332.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 13508 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (2449062).

Almost surely, 2^23315402 is an apocalyptic number.

23315402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23315402 is a deficient number, since it is larger than the sum of its proper divisors (15869590).

23315402 is a wasteful number, since it uses less digits than its factorization.

23315402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28693.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23315402 is about 4828.6024893337. The cubic root of 23315402 is about 285.6807447055.

Adding to 23315402 its reverse (20451332), we get a palindrome (43766734).

The spelling of 23315402 in words is "twenty-three million, three hundred fifteen thousand, four hundred two".