78113827 has 8 divisors (see below), whose sum is σ = 90227952. Its totient is φ = 66835200.

The previous prime is 78113821. The next prime is 78113837. The reversal of 78113827 is 72831187.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78113827 is a prime.

It is a super-2 number, since 2×78113827² = 12203539937171858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78113821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208674 + ... + 209047.

It is an arithmetic number, because the mean of its divisors is an integer number (11278494).

Almost surely, 2^78113827 is an apocalyptic number.

78113827 is a deficient number, since it is larger than the sum of its proper divisors (12114125).

78113827 is a wasteful number, since it uses less digits than its factorization.

78113827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417749.

The product of its digits is 18816, while the sum is 37.

The square root of 78113827 is about 8838.2027019072. The cubic root of 78113827 is about 427.4736064323.

The spelling of 78113827 in words is "seventy-eight million, one hundred thirteen thousand, eight hundred twenty-seven".