248785278 has 64 divisors (see below), whose sum is σ = 607150080. Its totient is φ = 66376800.

The previous prime is 248785249. The next prime is 248785301. The reversal of 248785278 is 872587842.

It is a super-2 number, since 2×248785278² = 123788229099074568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 248785278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54463 + ... + 58853.

It is an arithmetic number, because the mean of its divisors is an integer number (9486720).

Almost surely, 2^248785278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 248785278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303575040).

248785278 is an abundant number, since it is smaller than the sum of its proper divisors (358364802).

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

248785278 is a wasteful number, since it uses less digits than its factorization.

248785278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493.

The product of its digits is 2007040, while the sum is 51.

The square root of 248785278 is about 15772.9286437237. The cubic root of 248785278 is about 628.9385654152.

The spelling of 248785278 in words is "two hundred forty-eight million, seven hundred eighty-five thousand, two hundred seventy-eight".