248876781 has 16 divisors (see below), whose sum is σ = 337839360. Its totient is φ = 162938880.

The previous prime is 248876777. The next prime is 248876851. The reversal of 248876781 is 187678842.

It is not a de Polignac number, because 248876781 - 2² = 248876777 is a prime.

It is a super-2 number, since 2×248876781² = 123879304241843922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248876681) 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, 43021 + ... + 48461.

It is an arithmetic number, because the mean of its divisors is an integer number (21114960).

Almost surely, 2^248876781 is an apocalyptic number.

It is an amenable number.

248876781 is a deficient number, since it is larger than the sum of its proper divisors (88962579).

248876781 is a wasteful number, since it uses less digits than its factorization.

248876781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716.

The product of its digits is 1204224, while the sum is 51.

The square root of 248876781 is about 15775.8290114973. The cubic root of 248876781 is about 629.0156636421.

The spelling of 248876781 in words is "two hundred forty-eight million, eight hundred seventy-six thousand, seven hundred eighty-one".