78804552 has 64 divisors (see below), whose sum is σ = 212256000. Its totient is φ = 24300864.

The previous prime is 78804547. The next prime is 78804553. The reversal of 78804552 is 25540887.

It is a super-3 number, since 3×78804552³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78804552.

It is not an unprimeable number, because it can be changed into a prime (78804553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17599 + ... + 21617.

It is an arithmetic number, because the mean of its divisors is an integer number (3316500).

Almost surely, 2^78804552 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 78804552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106128000).

78804552 is an abundant number, since it is smaller than the sum of its proper divisors (133451448).

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

78804552 is a wasteful number, since it uses less digits than its factorization.

78804552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090 (or 4086 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 78804552 is about 8877.1927995285. The cubic root of 78804552 is about 428.7298955573.

The spelling of 78804552 in words is "seventy-eight million, eight hundred four thousand, five hundred fifty-two".