87890194 has 32 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 36327312.

The previous prime is 87890167. The next prime is 87890197. The reversal of 87890194 is 49109878.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87890197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49087 + ... + 50845.

It is an arithmetic number, because the mean of its divisors is an integer number (4878720).

Almost surely, 2^87890194 is an apocalyptic number.

87890194 is a deficient number, since it is larger than the sum of its proper divisors (68228846).

87890194 is a wasteful number, since it uses less digits than its factorization.

87890194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 87890194 is about 9374.9770133052. The cubic root of 87890194 is about 444.6109362946.

The spelling of 87890194 in words is "eighty-seven million, eight hundred ninety thousand, one hundred ninety-four".