13420738 has 4 divisors (see below), whose sum is σ = 20131110. Its totient is φ = 6710368.

The previous prime is 13420727. The next prime is 13420741. The reversal of 13420738 is 83702431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83702431 = 61 ⋅1372171.

It can be written as a sum of positive squares in only one way, i.e., 13373649 + 47089 = 3657^2 + 217^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3355183 + ... + 3355186.

Almost surely, 2^13420738 is an apocalyptic number.

13420738 is a deficient number, since it is larger than the sum of its proper divisors (6710372).

13420738 is an equidigital number, since it uses as much as digits as its factorization.

13420738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710371.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13420738 is about 3663.4325433942. The cubic root of 13420738 is about 237.6432406460.

The spelling of 13420738 in words is "thirteen million, four hundred twenty thousand, seven hundred thirty-eight".