12704402 has 4 divisors (see below), whose sum is σ = 19056606. Its totient is φ = 6352200.

The previous prime is 12704401. The next prime is 12704413. The reversal of 12704402 is 20440721.

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., 8708401 + 3996001 = 2951^2 + 1999^2 .

It is a super-2 number, since 2×12704402² = 322803660355208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12704401) by changing a digit.

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 as a sum of consecutive naturals, namely, 3176099 + ... + 3176102.

Almost surely, 2^12704402 is an apocalyptic number.

12704402 is a deficient number, since it is larger than the sum of its proper divisors (6352204).

12704402 is an equidigital number, since it uses as much as digits as its factorization.

12704402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352203.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12704402 is about 3564.3234982252. The cubic root of 12704402 is about 233.3376085384.

The spelling of 12704402 in words is "twelve million, seven hundred four thousand, four hundred two".