79278336 has 108 divisors (see below), whose sum is σ = 240742320. Its totient is φ = 25021440.

The previous prime is 79278307. The next prime is 79278337. The reversal of 79278336 is 63387297.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 79278291 and 79278300.

It is not an unprimeable number, because it can be changed into a prime (79278337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42871 + ... + 44681.

Almost surely, 2^79278336 is an apocalyptic number.

79278336 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79278336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120371160).

79278336 is an abundant number, since it is smaller than the sum of its proper divisors (161463984).

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

79278336 is a wasteful number, since it uses less digits than its factorization.

79278336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1835 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 79278336 is about 8903.8382734639. The cubic root of 79278336 is about 429.5873741387.

The spelling of 79278336 in words is "seventy-nine million, two hundred seventy-eight thousand, three hundred thirty-six".