248278820 has 12 divisors (see below), whose sum is σ = 521385564. Its totient is φ = 99311520.

The previous prime is 248278819. The next prime is 248278853. The reversal of 248278820 is 28872842.

It can be written as a sum of positive squares in 2 ways, for example, as 171295744 + 76983076 = 13088^2 + 8774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206951 + ... + 6206990.

It is an arithmetic number, because the mean of its divisors is an integer number (43448797).

Almost surely, 2^248278820 is an apocalyptic number.

248278820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248278820 is an abundant number, since it is smaller than the sum of its proper divisors (273106744).

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

248278820 is a wasteful number, since it uses less digits than its factorization.

248278820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12413950 (or 12413948 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 248278820 is about 15756.8658051022. The cubic root of 248278820 is about 628.5114938426.

The spelling of 248278820 in words is "two hundred forty-eight million, two hundred seventy-eight thousand, eight hundred twenty".