87628143 has 8 divisors (see below), whose sum is σ = 118316800. Its totient is φ = 57679128.

The previous prime is 87628139. The next prime is 87628153. The reversal of 87628143 is 34182678.

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

It is not a de Polignac number, because 87628143 - 2² = 87628139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87628153) 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, 184633 + ... + 185106.

It is an arithmetic number, because the mean of its divisors is an integer number (14789600).

Almost surely, 2^87628143 is an apocalyptic number.

87628143 is a deficient number, since it is larger than the sum of its proper divisors (30688657).

87628143 is a wasteful number, since it uses less digits than its factorization.

87628143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369821.

The product of its digits is 64512, while the sum is 39.

The square root of 87628143 is about 9360.9904924639. The cubic root of 87628143 is about 444.1686164618.

The spelling of 87628143 in words is "eighty-seven million, six hundred twenty-eight thousand, one hundred forty-three".