87947672 has 8 divisors (see below), whose sum is σ = 164901900. Its totient is φ = 43973832.

The previous prime is 87947659. The next prime is 87947677. The reversal of 87947672 is 27674978.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 87947672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87947677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5496722 + ... + 5496737.

Almost surely, 2^87947672 is an apocalyptic number.

It is an amenable number.

87947672 is a deficient number, since it is larger than the sum of its proper divisors (76954228).

87947672 is a wasteful number, since it uses less digits than its factorization.

87947672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10993465 (or 10993461 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 87947672 is about 9378.0420131283. The cubic root of 87947672 is about 444.7078366707.

The spelling of 87947672 in words is "eighty-seven million, nine hundred forty-seven thousand, six hundred seventy-two".