86990228 has 12 divisors (see below), whose sum is σ = 163943220. Its totient is φ = 40149312.

The previous prime is 86990191. The next prime is 86990237. The reversal of 86990228 is 82209968.

It can be written as a sum of positive squares in 2 ways, for example, as 43059844 + 43930384 = 6562^2 + 6628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836393 + ... + 836496.

It is an arithmetic number, because the mean of its divisors is an integer number (13661935).

Almost surely, 2^86990228 is an apocalyptic number.

It is an amenable number.

86990228 is a deficient number, since it is larger than the sum of its proper divisors (76952992).

86990228 is a wasteful number, since it uses less digits than its factorization.

86990228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672906 (or 1672904 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 86990228 is about 9326.8552041940. The cubic root of 86990228 is about 443.0881714342.

The spelling of 86990228 in words is "eighty-six million, nine hundred ninety thousand, two hundred twenty-eight".