78295312 has 40 divisors (see below), whose sum is σ = 159454080. Its totient is φ = 37171200.

The previous prime is 78295309. The next prime is 78295313. The reversal of 78295312 is 21359287.

It is a super-2 number, since 2×78295312² = 12260311762354688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78295313) 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, 54864 + ... + 56272.

It is an arithmetic number, because the mean of its divisors is an integer number (3986352).

Almost surely, 2^78295312 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 78295312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79727040).

78295312 is an abundant number, since it is smaller than the sum of its proper divisors (81158768).

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

78295312 is a wasteful number, since it uses less digits than its factorization.

78295312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1585 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 78295312 is about 8848.4638214777. The cubic root of 78295312 is about 427.8044059260.

The spelling of 78295312 in words is "seventy-eight million, two hundred ninety-five thousand, three hundred twelve".