87436428 has 12 divisors (see below), whose sum is σ = 204018360. Its totient is φ = 29145472.

The previous prime is 87436381. The next prime is 87436451. The reversal of 87436428 is 82463478.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 87436428.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643173 + ... + 3643196.

It is an arithmetic number, because the mean of its divisors is an integer number (17001530).

Almost surely, 2^87436428 is an apocalyptic number.

It is an amenable number.

87436428 is an abundant number, since it is smaller than the sum of its proper divisors (116581932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87436428 is a wasteful number, since it uses less digits than its factorization.

87436428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7286376 (or 7286374 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 87436428 is about 9350.7447831710. The cubic root of 87436428 is about 443.8444589499.

The spelling of 87436428 in words is "eighty-seven million, four hundred thirty-six thousand, four hundred twenty-eight".