1087812216 has 24 divisors (see below), whose sum is σ = 2946158280. Its totient is φ = 362604048.

The previous prime is 1087812169. The next prime is 1087812221. The reversal of 1087812216 is 6122187801.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7554180 + ... + 7554323.

It is an arithmetic number, because the mean of its divisors is an integer number (122756595).

Almost surely, 2^1087812216 is an apocalyptic number.

It is an amenable number.

1087812216 is an abundant number, since it is smaller than the sum of its proper divisors (1858346064).

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

1087812216 is a wasteful number, since it uses less digits than its factorization.

1087812216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15108515 (or 15108508 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1087812216 is about 32981.9983627433. The cubic root of 1087812216 is about 1028.4534606109.

The spelling of 1087812216 in words is "one billion, eighty-seven million, eight hundred twelve thousand, two hundred sixteen".