13642378 has 8 divisors (see below), whose sum is σ = 20710368. Its totient is φ = 6738924.

The previous prime is 13642357. The next prime is 13642423. The reversal of 13642378 is 87324631.

It is a happy number.

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

It is a super-2 number, since 2×13642378² = 372228954989768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40926 + ... + 41257.

It is an arithmetic number, because the mean of its divisors is an integer number (2588796).

Almost surely, 2^13642378 is an apocalyptic number.

13642378 is a deficient number, since it is larger than the sum of its proper divisors (7067990).

13642378 is an equidigital number, since it uses as much as digits as its factorization.

13642378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82268.

The product of its digits is 24192, while the sum is 34.

The square root of 13642378 is about 3693.5589882930. The cubic root of 13642378 is about 238.9443098947.

The spelling of 13642378 in words is "thirteen million, six hundred forty-two thousand, three hundred seventy-eight".