87795890 has 32 divisors (see below), whose sum is σ = 194503680. Its totient is φ = 27785664.

The previous prime is 87795881. The next prime is 87795947. The reversal of 87795890 is 9859778.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47330 + ... + 49149.

It is an arithmetic number, because the mean of its divisors is an integer number (6078240).

Almost surely, 2^87795890 is an apocalyptic number.

87795890 is an abundant number, since it is smaller than the sum of its proper divisors (106707790).

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

87795890 is a wasteful number, since it uses less digits than its factorization.

87795890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96506.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 87795890 is about 9369.9461044341. The cubic root of 87795890 is about 444.4518605475.

The spelling of 87795890 in words is "eighty-seven million, seven hundred ninety-five thousand, eight hundred ninety".