248981820 has 48 divisors (see below), whose sum is σ = 721193760. Its totient is φ = 64105216.

The previous prime is 248981783. The next prime is 248981839. The reversal of 248981820 is 28189842.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69807 + ... + 73286.

It is an arithmetic number, because the mean of its divisors is an integer number (15024870).

Almost surely, 2^248981820 is an apocalyptic number.

248981820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248981820 is an abundant number, since it is smaller than the sum of its proper divisors (472211940).

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

248981820 is a wasteful number, since it uses less digits than its factorization.

248981820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143134 (or 143132 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 248981820 is about 15779.1577722006. The cubic root of 248981820 is about 629.1041436830.

The spelling of 248981820 in words is "two hundred forty-eight million, nine hundred eighty-one thousand, eight hundred twenty".