78773292 has 72 divisors (see below), whose sum is σ = 215560800. Its totient is φ = 24111360.

The previous prime is 78773281. The next prime is 78773323. The reversal of 78773292 is 29237787.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131209 + ... + 131807.

It is an arithmetic number, because the mean of its divisors is an integer number (2993900).

Almost surely, 2^78773292 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 78773292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107780400).

78773292 is an abundant number, since it is smaller than the sum of its proper divisors (136787508).

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

78773292 is a wasteful number, since it uses less digits than its factorization.

78773292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 898 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 78773292 is about 8875.4319331512. The cubic root of 78773292 is about 428.6731988789.

The spelling of 78773292 in words is "seventy-eight million, seven hundred seventy-three thousand, two hundred ninety-two".