83728716 has 12 divisors (see below), whose sum is σ = 195367032. Its totient is φ = 27909568.

The previous prime is 83728693. The next prime is 83728739. The reversal of 83728716 is 61782738.

It is an interprime number because it is at equal distance from previous prime (83728693) and next prime (83728739).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3488685 + ... + 3488708.

It is an arithmetic number, because the mean of its divisors is an integer number (16280586).

Almost surely, 2^83728716 is an apocalyptic number.

It is an amenable number.

83728716 is an abundant number, since it is smaller than the sum of its proper divisors (111638316).

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

83728716 is a wasteful number, since it uses less digits than its factorization.

83728716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6977400 (or 6977398 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 83728716 is about 9150.3396658266. The cubic root of 83728716 is about 437.4799398693.

The spelling of 83728716 in words is "eighty-three million, seven hundred twenty-eight thousand, seven hundred sixteen".