83660928 has 64 divisors (see below), whose sum is σ = 239332800. Its totient is φ = 25740288.

The previous prime is 83660887. The next prime is 83660939. The reversal of 83660928 is 82906638.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 83660928.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3388 + ... + 13371.

It is an arithmetic number, because the mean of its divisors is an integer number (3739575).

Almost surely, 2^83660928 is an apocalyptic number.

It is an amenable number.

83660928 is an abundant number, since it is smaller than the sum of its proper divisors (155671872).

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

83660928 is a wasteful number, since it uses less digits than its factorization.

83660928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16789 (or 16777 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 83660928 is about 9146.6347910037. The cubic root of 83660928 is about 437.3618445950.

The spelling of 83660928 in words is "eighty-three million, six hundred sixty thousand, nine hundred twenty-eight".