248528778 has 32 divisors (see below), whose sum is σ = 537368640. Its totient is φ = 76360320.

The previous prime is 248528773. The next prime is 248528783. The reversal of 248528778 is 877825842.

It is an interprime number because it is at equal distance from previous prime (248528773) and next prime (248528783).

It is a self number, because there is not a number n which added to its sum of digits gives 248528778.

It is not an unprimeable number, because it can be changed into a prime (248528771) 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, 25243 + ... + 33678.

It is an arithmetic number, because the mean of its divisors is an integer number (16792770).

Almost surely, 2^248528778 is an apocalyptic number.

248528778 is an abundant number, since it is smaller than the sum of its proper divisors (288839862).

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

248528778 is a wasteful number, since it uses less digits than its factorization.

248528778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58982.

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

The square root of 248528778 is about 15764.7955267425. The cubic root of 248528778 is about 628.7223438648.

The spelling of 248528778 in words is "two hundred forty-eight million, five hundred twenty-eight thousand, seven hundred seventy-eight".