1117061280 has 336 divisors, whose sum is σ = 4047256584. Its totient is φ = 291133440.

The previous prime is 1117061273. The next prime is 1117061291. The reversal of 1117061280 is 821607111.

It can be written as a sum of positive squares in 4 ways, for example, as 461906064 + 655155216 = 21492^2 + 25596^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 7114962 + ... + 7115118.

Almost surely, 2^1117061280 is an apocalyptic number.

1117061280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1117061280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2023628292).

1117061280 is an abundant number, since it is smaller than the sum of its proper divisors (2930195304).

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

1117061280 is an equidigital number, since it uses as much as digits as its factorization.

1117061280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 1117061280 is about 33422.4666953234. The cubic root of 1117061280 is about 1037.5897339525.

Adding to 1117061280 its reverse (821607111), we get a palindrome (1938668391).

The spelling of 1117061280 in words is "one billion, one hundred seventeen million, sixty-one thousand, two hundred eighty".