78260992 has 36 divisors (see below), whose sum is σ = 156844296. Its totient is φ = 38973440.

The previous prime is 78260971. The next prime is 78260999. The reversal of 78260992 is 29906287.

It is a happy number.

It is a super-2 number, since 2×78260992² = 12249565737648128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78260999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88392 + ... + 89272.

It is an arithmetic number, because the mean of its divisors is an integer number (4356786).

Almost surely, 2^78260992 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 78260992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78422148).

78260992 is an abundant number, since it is smaller than the sum of its proper divisors (78583304).

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

78260992 is an equidigital number, since it uses as much as digits as its factorization.

78260992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 78260992 is about 8846.5242892336. The cubic root of 78260992 is about 427.7418888028.

The spelling of 78260992 in words is "seventy-eight million, two hundred sixty thousand, nine hundred ninety-two".