87020834 has 8 divisors (see below), whose sum is σ = 131877228. Its totient is φ = 43061760.

The previous prime is 87020833. The next prime is 87020839. The reversal of 87020834 is 43802078.

It can be written as a sum of positive squares in 2 ways, for example, as 84695209 + 2325625 = 9203^2 + 1525^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 87020834.

It is not an unprimeable number, because it can be changed into a prime (87020833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224087 + ... + 224474.

Almost surely, 2^87020834 is an apocalyptic number.

87020834 is a deficient number, since it is larger than the sum of its proper divisors (44856394).

87020834 is a wasteful number, since it uses less digits than its factorization.

87020834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448660.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 87020834 is about 9328.4958058628. The cubic root of 87020834 is about 443.1401296322.

The spelling of 87020834 in words is "eighty-seven million, twenty thousand, eight hundred thirty-four".