83728767 has 8 divisors (see below), whose sum is σ = 111976960. Its totient is φ = 55649880.

The previous prime is 83728759. The next prime is 83728787. The reversal of 83728767 is 76782738.

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

It is not a de Polignac number, because 83728767 - 2³ = 83728759 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 (83728747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41167 + ... + 43152.

It is an arithmetic number, because the mean of its divisors is an integer number (13997120).

Almost surely, 2^83728767 is an apocalyptic number.

83728767 is a deficient number, since it is larger than the sum of its proper divisors (28248193).

83728767 is a wasteful number, since it uses less digits than its factorization.

83728767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84653.

The product of its digits is 790272, while the sum is 48.

The square root of 83728767 is about 9150.3424526080. The cubic root of 83728767 is about 437.4800286938.

The spelling of 83728767 in words is "eighty-three million, seven hundred twenty-eight thousand, seven hundred sixty-seven".