8258778 has 48 divisors (see below), whose sum is σ = 19914336. Its totient is φ = 2452320.

The previous prime is 8258759. The next prime is 8258797. The reversal of 8258778 is 8778528.

It is a happy number.

8258778 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8258759) and next prime (8258797).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10101 + ... + 10887.

It is an arithmetic number, because the mean of its divisors is an integer number (414882).

Almost surely, 2^8258778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8258778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9957168).

8258778 is an abundant number, since it is smaller than the sum of its proper divisors (11655558).

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

8258778 is a wasteful number, since it uses less digits than its factorization.

8258778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 856 counting only the distinct ones).

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

The square root of 8258778 is about 2873.8089706868. The cubic root of 8258778 is about 202.1336402854.

The spelling of 8258778 in words is "eight million, two hundred fifty-eight thousand, seven hundred seventy-eight".