78854292 has 72 divisors (see below), whose sum is σ = 219596832. Its totient is φ = 23659200.

The previous prime is 78854291. The next prime is 78854299. The reversal of 78854292 is 29245887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78854291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41442 + ... + 43302.

It is an arithmetic number, because the mean of its divisors is an integer number (3049956).

Almost surely, 2^78854292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78854292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109798416).

78854292 is an abundant number, since it is smaller than the sum of its proper divisors (140742540).

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

78854292 is a wasteful number, since it uses less digits than its factorization.

78854292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989 (or 1984 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 78854292 is about 8879.9939189168. The cubic root of 78854292 is about 428.8200787569.

The spelling of 78854292 in words is "seventy-eight million, eight hundred fifty-four thousand, two hundred ninety-two".