1087276320 has 216 divisors, whose sum is σ = 4012389108. Its totient is φ = 266526720.

The previous prime is 1087276277. The next prime is 1087276331. The reversal of 1087276320 is 236727801.

1087276320 is a `hidden beast` number, since 10 + 8 + 7 + 2 + 7 + 632 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 541399824 + 545876496 = 23268^2 + 23364^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4511400 + ... + 4511640.

Almost surely, 2^1087276320 is an apocalyptic number.

1087276320 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 1087276320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2006194554).

1087276320 is an abundant number, since it is smaller than the sum of its proper divisors (2925112788).

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

1087276320 is a wasteful number, since it uses less digits than its factorization.

1087276320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1087276320 is about 32973.8732938671. The cubic root of 1087276320 is about 1028.2845483001.

The spelling of 1087276320 in words is "one billion, eighty-seven million, two hundred seventy-six thousand, three hundred twenty".