1087261120 has 112 divisors (see below), whose sum is σ = 2834640000. Its totient is φ = 393937920.

The previous prime is 1087261081. The next prime is 1087261141. The reversal of 1087261120 is 211627801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756171 + ... + 1756789.

Almost surely, 2^1087261120 is an apocalyptic number.

1087261120 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 1087261120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417320000).

1087261120 is an abundant number, since it is smaller than the sum of its proper divisors (1747378880).

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

1087261120 is a wasteful number, since it uses less digits than its factorization.

1087261120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1087261120 is about 32973.6428075516. The cubic root of 1087261120 is about 1028.2797565106.

Adding to 1087261120 its reverse (211627801), we get a palindrome (1298888921).

The spelling of 1087261120 in words is "one billion, eighty-seven million, two hundred sixty-one thousand, one hundred twenty".