13078378 has 8 divisors (see below), whose sum is σ = 19704672. Its totient is φ = 6510156.

The previous prime is 13078369. The next prime is 13078379. The reversal of 13078378 is 87387031.

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

It is a super-2 number, since 2×13078378² = 342087942221768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13078379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13950 + ... + 14857.

It is an arithmetic number, because the mean of its divisors is an integer number (2463084).

Almost surely, 2^13078378 is an apocalyptic number.

13078378 is a deficient number, since it is larger than the sum of its proper divisors (6626294).

13078378 is a wasteful number, since it uses less digits than its factorization.

13078378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29036.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 13078378 is about 3616.4040150404. The cubic root of 13078378 is about 235.6050681918.

It can be divided in two parts, 13078 and 378, that added together give a square (13456 = 116²).

The spelling of 13078378 in words is "thirteen million, seventy-eight thousand, three hundred seventy-eight".