78000824 has 32 divisors (see below), whose sum is σ = 162950400. Its totient is φ = 34698720.

The previous prime is 78000821. The next prime is 78000829. The reversal of 78000824 is 42800087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78000821) 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, 5294 + ... + 13565.

It is an arithmetic number, because the mean of its divisors is an integer number (5092200).

Almost surely, 2^78000824 is an apocalyptic number.

It is an amenable number.

78000824 is an abundant number, since it is smaller than the sum of its proper divisors (84949576).

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

78000824 is a wasteful number, since it uses less digits than its factorization.

78000824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18923 (or 18919 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 78000824 is about 8831.8075160185. The cubic root of 78000824 is about 427.2673727246.

The spelling of 78000824 in words is "seventy-eight million, eight hundred twenty-four", and thus it is an aban number.