78113478 has 16 divisors (see below), whose sum is σ = 156314160. Its totient is φ = 26023296.

The previous prime is 78113471. The next prime is 78113527. The reversal of 78113478 is 87431187.

It is a super-2 number, since 2×78113478² = 12203430890512968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78113471) 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, 17226 + ... + 21282.

It is an arithmetic number, because the mean of its divisors is an integer number (9769635).

Almost surely, 2^78113478 is an apocalyptic number.

78113478 is an abundant number, since it is smaller than the sum of its proper divisors (78200682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78113478 is a wasteful number, since it uses less digits than its factorization.

78113478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7271.

The product of its digits is 37632, while the sum is 39.

The square root of 78113478 is about 8838.1829580520. The cubic root of 78113478 is about 427.4729698036.

The spelling of 78113478 in words is "seventy-eight million, one hundred thirteen thousand, four hundred seventy-eight".