87654132 has 18 divisors (see below), whose sum is σ = 221570258. Its totient is φ = 29218032.

The previous prime is 87654131. The next prime is 87654139. The reversal of 87654132 is 23145678.

87654132 is a `hidden beast` number, since 87 + 6 + 541 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87497316 + 156816 = 9354^2 + 396^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2434837 = 87654132 / (8 + 7 + 6 + 5 + 4 + 1 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87654131) 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 5 ways as a sum of consecutive naturals, for example, 1217383 + ... + 1217454.

Almost surely, 2^87654132 is an apocalyptic number.

It is an amenable number.

87654132 is an abundant number, since it is smaller than the sum of its proper divisors (133916126).

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

87654132 is a wasteful number, since it uses less digits than its factorization.

87654132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434847 (or 2434842 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 87654132 is about 9362.3785439385. The cubic root of 87654132 is about 444.2125230454.

The spelling of 87654132 in words is "eighty-seven million, six hundred fifty-four thousand, one hundred thirty-two".