248809785 has 32 divisors (see below), whose sum is σ = 462689280. Its totient is φ = 111811008.

The previous prime is 248809777. The next prime is 248809801. The reversal of 248809785 is 587908842.

It is a happy number.

248809785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 248809785 - 2³ = 248809777 is a prime.

It is a super-2 number, since 2×248809785² = 123812618223492450, which contains 22 as substring.

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, 13887 + ... + 26276.

It is an arithmetic number, because the mean of its divisors is an integer number (14459040).

Almost surely, 2^248809785 is an apocalyptic number.

It is an amenable number.

248809785 is a deficient number, since it is larger than the sum of its proper divisors (213879495).

248809785 is a wasteful number, since it uses less digits than its factorization.

248809785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40237.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 248809785 is about 15773.7054936372. The cubic root of 248809785 is about 628.9592162772.

The spelling of 248809785 in words is "two hundred forty-eight million, eight hundred nine thousand, seven hundred eighty-five".