87873642 has 12 divisors (see below), whose sum is σ = 190392930. Its totient is φ = 29291208.

The previous prime is 87873641. The next prime is 87873671. The reversal of 87873642 is 24637878.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87778161 + 95481 = 9369^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (87873641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2440917 + ... + 2440952.

Almost surely, 2^87873642 is an apocalyptic number.

87873642 is an abundant number, since it is smaller than the sum of its proper divisors (102519288).

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

87873642 is a wasteful number, since it uses less digits than its factorization.

87873642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4881877 (or 4881874 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 87873642 is about 9374.0941962410. The cubic root of 87873642 is about 444.5830239572.

The spelling of 87873642 in words is "eighty-seven million, eight hundred seventy-three thousand, six hundred forty-two".