87728363 has 4 divisors (see below), whose sum is σ = 87750168. Its totient is φ = 87706560.

The previous prime is 87728353. The next prime is 87728383. The reversal of 87728363 is 36382778.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87728363 - 2⁸ = 87728107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87728353) 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, 2918 + ... + 13563.

It is an arithmetic number, because the mean of its divisors is an integer number (21937542).

Almost surely, 2^87728363 is an apocalyptic number.

87728363 is a deficient number, since it is larger than the sum of its proper divisors (21805).

87728363 is a wasteful number, since it uses less digits than its factorization.

87728363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21804.

The product of its digits is 338688, while the sum is 44.

The square root of 87728363 is about 9366.3420287752. The cubic root of 87728363 is about 444.3378833115.

The spelling of 87728363 in words is "eighty-seven million, seven hundred twenty-eight thousand, three hundred sixty-three".