78292338 has 8 divisors (see below), whose sum is σ = 156584688. Its totient is φ = 26097444.

The previous prime is 78292309. The next prime is 78292363. The reversal of 78292338 is 83329287.

It is a sphenic number, since it is the product of 3 distinct primes.

78292338 is an admirable number.

It is a super-2 number, since 2×78292338² = 12259380379012488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78292338.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6524356 + ... + 6524367.

It is an arithmetic number, because the mean of its divisors is an integer number (19573086).

Almost surely, 2^78292338 is an apocalyptic number.

78292338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78292338 is a wasteful number, since it uses less digits than its factorization.

78292338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13048728.

The product of its digits is 145152, while the sum is 42.

The square root of 78292338 is about 8848.2957681126. The cubic root of 78292338 is about 427.7989892270.

The spelling of 78292338 in words is "seventy-eight million, two hundred ninety-two thousand, three hundred thirty-eight".