87194980 has 12 divisors (see below), whose sum is σ = 183109500. Its totient is φ = 34877984.

The previous prime is 87194969. The next prime is 87194983. The reversal of 87194980 is 8949178.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25321024 + 61873956 = 5032^2 + 7866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87194980.

It is not an unprimeable number, because it can be changed into a prime (87194983) 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, 2179855 + ... + 2179894.

It is an arithmetic number, because the mean of its divisors is an integer number (15259125).

Almost surely, 2^87194980 is an apocalyptic number.

It is an amenable number.

87194980 is an abundant number, since it is smaller than the sum of its proper divisors (95914520).

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

87194980 is a wasteful number, since it uses less digits than its factorization.

87194980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359758 (or 4359756 counting only the distinct ones).

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

The square root of 87194980 is about 9337.8252286065. The cubic root of 87194980 is about 443.4355365151.

The spelling of 87194980 in words is "eighty-seven million, one hundred ninety-four thousand, nine hundred eighty".