78811467 has 16 divisors (see below), whose sum is σ = 120248832. Its totient is φ = 44976960.

The previous prime is 78811463. The next prime is 78811493. The reversal of 78811467 is 76411887.

It is a happy number.

It is not a de Polignac number, because 78811467 - 2² = 78811463 is a prime.

It is a super-2 number, since 2×78811467² = 12422494661384178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78811463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18367 + ... + 22247.

It is an arithmetic number, because the mean of its divisors is an integer number (7515552).

Almost surely, 2^78811467 is an apocalyptic number.

78811467 is a deficient number, since it is larger than the sum of its proper divisors (41437365).

78811467 is a wasteful number, since it uses less digits than its factorization.

78811467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858.

The product of its digits is 75264, while the sum is 42.

The square root of 78811467 is about 8877.5822722180. The cubic root of 78811467 is about 428.7424353597.

The spelling of 78811467 in words is "seventy-eight million, eight hundred eleven thousand, four hundred sixty-seven".