75820878 has 48 divisors (see below), whose sum is σ = 188529120. Its totient is φ = 21572928.

The previous prime is 75820873. The next prime is 75820889. The reversal of 75820878 is 87802857.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75820873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32776 + ... + 35012.

It is an arithmetic number, because the mean of its divisors is an integer number (3927690).

Almost surely, 2^75820878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75820878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94264560).

75820878 is an abundant number, since it is smaller than the sum of its proper divisors (112708242).

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

75820878 is a wasteful number, since it uses less digits than its factorization.

75820878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521 (or 2518 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 75820878 is about 8707.5184754326. The cubic root of 75820878 is about 423.2493206848.

The spelling of 75820878 in words is "seventy-five million, eight hundred twenty thousand, eight hundred seventy-eight".