2781317952 has 112 divisors (see below), whose sum is σ = 9344680320. Its totient is φ = 794658816.

The previous prime is 2781317951. The next prime is 2781317977. The reversal of 2781317952 is 2597131872.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 2781317898 and 2781317907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781317951) 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, 102873 + ... + 127064.

Almost surely, 2^2781317952 is an apocalyptic number.

It is an amenable number.

2781317952 is an abundant number, since it is smaller than the sum of its proper divisors (6563362368).

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

2781317952 is a wasteful number, since it uses less digits than its factorization.

2781317952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229965 (or 229949 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 2781317952 is about 52738.2020171337. The cubic root of 2781317952 is about 1406.3180350373.

The spelling of 2781317952 in words is "two billion, seven hundred eighty-one million, three hundred seventeen thousand, nine hundred fifty-two".