78482272 has 48 divisors (see below), whose sum is σ = 171460800. Its totient is φ = 35059840.

The previous prime is 78482269. The next prime is 78482273. The reversal of 78482272 is 27228487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78482273) 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, 18879 + ... + 22657.

It is an arithmetic number, because the mean of its divisors is an integer number (3572100).

Almost surely, 2^78482272 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 78482272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85730400).

78482272 is an abundant number, since it is smaller than the sum of its proper divisors (92978528).

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

78482272 is a wasteful number, since it uses less digits than its factorization.

78482272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3859 (or 3851 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 78482272 is about 8859.0220679260. The cubic root of 78482272 is about 428.1446507896.

The spelling of 78482272 in words is "seventy-eight million, four hundred eighty-two thousand, two hundred seventy-two".