87732730 has 8 divisors (see below), whose sum is σ = 157918932. Its totient is φ = 35093088.

The previous prime is 87732719. The next prime is 87732737. The reversal of 87732730 is 3723778.

It can be written as a sum of positive squares in 2 ways, for example, as 86285521 + 1447209 = 9289^2 + 1203^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 87732730.

It is not an unprimeable number, because it can be changed into a prime (87732737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4386627 + ... + 4386646.

Almost surely, 2^87732730 is an apocalyptic number.

87732730 is a deficient number, since it is larger than the sum of its proper divisors (70186202).

87732730 is a wasteful number, since it uses less digits than its factorization.

87732730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8773280.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 87732730 is about 9366.5751478329. The cubic root of 87732730 is about 444.3452560367.

The spelling of 87732730 in words is "eighty-seven million, seven hundred thirty-two thousand, seven hundred thirty".