78434968 has 64 divisors (see below), whose sum is σ = 162025920. Its totient is φ = 35481600.

The previous prime is 78434947. The next prime is 78434969. The reversal of 78434968 is 86943487.

It is a super-2 number, since 2×78434968² = 12304088410322048, which contains 22 as substring.

Its product of digits (1161216) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78434969) 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, 278988 + ... + 279268.

It is an arithmetic number, because the mean of its divisors is an integer number (2531655).

Almost surely, 2^78434968 is an apocalyptic number.

It is an amenable number.

78434968 is an abundant number, since it is smaller than the sum of its proper divisors (83590952).

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

78434968 is a wasteful number, since it uses less digits than its factorization.

78434968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 384 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 78434968 is about 8856.3518448625. The cubic root of 78434968 is about 428.0586142684.

The spelling of 78434968 in words is "seventy-eight million, four hundred thirty-four thousand, nine hundred sixty-eight".