78056401 has 8 divisors (see below), whose sum is σ = 82957824. Its totient is φ = 73189440.

The previous prime is 78056369. The next prime is 78056413. The reversal of 78056401 is 10465087.

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

It is a cyclic number.

It is not a de Polignac number, because 78056401 - 2⁵ = 78056369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78056101) by changing a digit.

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, 3865 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (10369728).

Almost surely, 2^78056401 is an apocalyptic number.

It is an amenable number.

78056401 is a deficient number, since it is larger than the sum of its proper divisors (4901423).

78056401 is a wasteful number, since it uses less digits than its factorization.

78056401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17231.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 78056401 is about 8834.9533671661. The cubic root of 78056401 is about 427.3688272133.

The spelling of 78056401 in words is "seventy-eight million, fifty-six thousand, four hundred one".