7834878 has 48 divisors (see below), whose sum is σ = 18470400. Its totient is φ = 2391120.

The previous prime is 7834877. The next prime is 7834889. The reversal of 7834878 is 8784387.

It is a super-2 number, since 2×7834878² = 122770626549768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7834877) 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, 10233 + ... + 10971.

It is an arithmetic number, because the mean of its divisors is an integer number (384800).

Almost surely, 2^7834878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7834878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9235200).

7834878 is an abundant number, since it is smaller than the sum of its proper divisors (10635522).

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

7834878 is a wasteful number, since it uses less digits than its factorization.

7834878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 794 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 7834878 is about 2799.0852077063. The cubic root of 7834878 is about 198.6144061497.

The spelling of 7834878 in words is "seven million, eight hundred thirty-four thousand, eight hundred seventy-eight".