72871287 has 8 divisors (see below), whose sum is σ = 100512240. Its totient is φ = 46905600.

The previous prime is 72871247. The next prime is 72871303. The reversal of 72871287 is 78217827.

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

It is not a de Polignac number, because 72871287 - 2¹² = 72867191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72871207) 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, 418714 + ... + 418887.

It is an arithmetic number, because the mean of its divisors is an integer number (12564030).

Almost surely, 2^72871287 is an apocalyptic number.

72871287 is a deficient number, since it is larger than the sum of its proper divisors (27640953).

72871287 is a wasteful number, since it uses less digits than its factorization.

72871287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837633.

The product of its digits is 87808, while the sum is 42.

The square root of 72871287 is about 8536.4680635495. The cubic root of 72871287 is about 417.6881425801.

The spelling of 72871287 in words is "seventy-two million, eight hundred seventy-one thousand, two hundred eighty-seven".