1131262560 has 144 divisors (see below), whose sum is σ = 3873214800. Its totient is φ = 300672000.

The previous prime is 1131262547. The next prime is 1131262589. The reversal of 1131262560 is 652621311.

1131262560 is a `hidden beast` number, since 1 + 1 + 31 + 2 + 625 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501435 + ... + 503685.

It is an arithmetic number, because the mean of its divisors is an integer number (26897325).

Almost surely, 2^1131262560 is an apocalyptic number.

1131262560 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 1131262560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1936607400).

1131262560 is an abundant number, since it is smaller than the sum of its proper divisors (2741952240).

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

1131262560 is a wasteful number, since it uses less digits than its factorization.

1131262560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1131262560 is about 33634.2468326556. The cubic root of 1131262560 is about 1041.9682155735.

Adding to 1131262560 its reverse (652621311), we get a palindrome (1783883871).

The spelling of 1131262560 in words is "one billion, one hundred thirty-one million, two hundred sixty-two thousand, five hundred sixty".