1140087280 has 20 divisors (see below), whose sum is σ = 2650703112. Its totient is φ = 456034880.

The previous prime is 1140087271. The next prime is 1140087281. The reversal of 1140087280 is 827800411.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×1140087280³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140087281) 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, 7125466 + ... + 7125625.

Almost surely, 2^1140087280 is an apocalyptic number.

1140087280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140087280 is an abundant number, since it is smaller than the sum of its proper divisors (1510615832).

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

1140087280 is a wasteful number, since it uses less digits than its factorization.

1140087280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14251104 (or 14251098 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 1140087280 is about 33765.1785127815. The cubic root of 1140087280 is about 1044.6705859437.

Adding to 1140087280 its reverse (827800411), we get a palindrome (1967887691).

The spelling of 1140087280 in words is "one billion, one hundred forty million, eighty-seven thousand, two hundred eighty".