87272639 has 8 divisors (see below), whose sum is σ = 88887168. Its totient is φ = 85664160.

The previous prime is 87272617. The next prime is 87272663. The reversal of 87272639 is 93627278.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87272639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87272639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87272239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35849 + ... + 38205.

It is an arithmetic number, because the mean of its divisors is an integer number (11110896).

Almost surely, 2^87272639 is an apocalyptic number.

87272639 is a deficient number, since it is larger than the sum of its proper divisors (1614529).

87272639 is a wasteful number, since it uses less digits than its factorization.

87272639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025.

The product of its digits is 254016, while the sum is 44.

The square root of 87272639 is about 9341.9826054216. The cubic root of 87272639 is about 443.5671440222.

The spelling of 87272639 in words is "eighty-seven million, two hundred seventy-two thousand, six hundred thirty-nine".