87020115 has 64 divisors (see below), whose sum is σ = 176096256. Its totient is φ = 35707392.

The previous prime is 87020107. The next prime is 87020123. The reversal of 87020115 is 51102078.

It is an interprime number because it is at equal distance from previous prime (87020107) and next prime (87020123).

It is not a de Polignac number, because 87020115 - 2³ = 87020107 is a prime.

It is a super-2 number, since 2×87020115² = 15145000829226450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49644 + ... + 51366.

It is an arithmetic number, because the mean of its divisors is an integer number (2751504).

Almost surely, 2^87020115 is an apocalyptic number.

87020115 is an abundant number, since it is smaller than the sum of its proper divisors (89076141).

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

87020115 is a wasteful number, since it uses less digits than its factorization.

87020115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 87020115 is about 9328.4572679517. The cubic root of 87020115 is about 443.1389091635.

The spelling of 87020115 in words is "eighty-seven million, twenty thousand, one hundred fifteen".