87428873 has 8 divisors (see below), whose sum is σ = 100059840. Its totient is φ = 74833200.

The previous prime is 87428867. The next prime is 87428893. The reversal of 87428873 is 37882478.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87428873 - 2¹⁶ = 87363337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87428813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3278 + ... + 13623.

It is an arithmetic number, because the mean of its divisors is an integer number (12507480).

Almost surely, 2^87428873 is an apocalyptic number.

It is an amenable number.

87428873 is a deficient number, since it is larger than the sum of its proper divisors (12630967).

87428873 is a wasteful number, since it uses less digits than its factorization.

87428873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17647.

The product of its digits is 602112, while the sum is 47.

The square root of 87428873 is about 9350.3407959282. The cubic root of 87428873 is about 443.8316750278.

The spelling of 87428873 in words is "eighty-seven million, four hundred twenty-eight thousand, eight hundred seventy-three".