2117782260 has 120 divisors (see below), whose sum is σ = 7247582496. Its totient is φ = 513397440.

The previous prime is 2117782253. The next prime is 2117782301. The reversal of 2117782260 is 622877112.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41602 + ... + 77241.

Almost surely, 2^2117782260 is an apocalyptic number.

2117782260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2117782260 is an abundant number, since it is smaller than the sum of its proper divisors (5129800236).

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

2117782260 is a wasteful number, since it uses less digits than its factorization.

2117782260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118875 (or 118864 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 2117782260 is about 46019.3683137872. The cubic root of 2117782260 is about 1284.1835487450.

The spelling of 2117782260 in words is "two billion, one hundred seventeen million, seven hundred eighty-two thousand, two hundred sixty".