1117858240 has 28 divisors (see below), whose sum is σ = 2661900696. Its totient is φ = 447143168.

The previous prime is 1117858223. The next prime is 1117858249. The reversal of 1117858240 is 428587111.

It is a self number, because there is not a number n which added to its sum of digits gives 1117858240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117858249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746334 + ... + 1746973.

It is an arithmetic number, because the mean of its divisors is an integer number (95067882).

Almost surely, 2^1117858240 is an apocalyptic number.

1117858240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1117858240 is an abundant number, since it is smaller than the sum of its proper divisors (1544042456).

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

1117858240 is an equidigital number, since it uses as much as digits as its factorization.

1117858240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493324 (or 3493314 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 1117858240 is about 33434.3870887444. The cubic root of 1117858240 is about 1037.8364291440.

The spelling of 1117858240 in words is "one billion, one hundred seventeen million, eight hundred fifty-eight thousand, two hundred forty".