78052288 has 56 divisors (see below), whose sum is σ = 159654240. Its totient is φ = 37847040.

The previous prime is 78052283. The next prime is 78052291. The reversal of 78052288 is 88225087.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78052288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78052283) 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, 404320 + ... + 404512.

Almost surely, 2^78052288 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 78052288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79827120).

78052288 is an abundant number, since it is smaller than the sum of its proper divisors (81601952).

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

78052288 is a wasteful number, since it uses less digits than its factorization.

78052288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 78052288 is about 8834.7205954688. The cubic root of 78052288 is about 427.3613206802.

The spelling of 78052288 in words is "seventy-eight million, fifty-two thousand, two hundred eighty-eight".