1087320538 has 16 divisors (see below), whose sum is σ = 1702886976. Its totient is φ = 519719200.

The previous prime is 1087320523. The next prime is 1087320539. The reversal of 1087320538 is 8350237801.

It is a junction number, because it is equal to n+sod(n) for n = 1087320497 and 1087320506.

It is not an unprimeable number, because it can be changed into a prime (1087320539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86238 + ... + 98038.

It is an arithmetic number, because the mean of its divisors is an integer number (106430436).

Almost surely, 2^1087320538 is an apocalyptic number.

1087320538 is a deficient number, since it is larger than the sum of its proper divisors (615566438).

1087320538 is a wasteful number, since it uses less digits than its factorization.

1087320538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13829.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1087320538 is about 32974.5437875947. The cubic root of 1087320538 is about 1028.2984877404.

The spelling of 1087320538 in words is "one billion, eighty-seven million, three hundred twenty thousand, five hundred thirty-eight".