87728933 has 8 divisors (see below), whose sum is σ = 88780800. Its totient is φ = 86682960.

The previous prime is 87728899. The next prime is 87728981. The reversal of 87728933 is 33982778.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87728933 - 2⁸ = 87728677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87728983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33143 + ... + 35691.

It is an arithmetic number, because the mean of its divisors is an integer number (11097600).

Almost surely, 2^87728933 is an apocalyptic number.

It is an amenable number.

87728933 is a deficient number, since it is larger than the sum of its proper divisors (1051867).

87728933 is a wasteful number, since it uses less digits than its factorization.

87728933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its digits is 508032, while the sum is 47.

The square root of 87728933 is about 9366.3724568266. The cubic root of 87728933 is about 444.3388456458.

The spelling of 87728933 in words is "eighty-seven million, seven hundred twenty-eight thousand, nine hundred thirty-three".