78378468 has 48 divisors (see below), whose sum is σ = 211061760. Its totient is φ = 22173984.

The previous prime is 78378413. The next prime is 78378481. The reversal of 78378468 is 86487387.

It is a super-2 number, since 2×78378468² = 12286368492054048, 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 78378468.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4123 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (4397120).

Almost surely, 2^78378468 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 78378468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105530880).

78378468 is an abundant number, since it is smaller than the sum of its proper divisors (132683292).

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

78378468 is a wasteful number, since it uses less digits than its factorization.

78378468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176 (or 9174 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 78378468 is about 8853.1614692154. The cubic root of 78378468 is about 427.9558067160.

The spelling of 78378468 in words is "seventy-eight million, three hundred seventy-eight thousand, four hundred sixty-eight".