83428872 has 16 divisors (see below), whose sum is σ = 208572240. Its totient is φ = 27809616.

The previous prime is 83428871. The next prime is 83428883. The reversal of 83428872 is 27882438.

It is not an unprimeable number, because it can be changed into a prime (83428871) 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, 1738078 + ... + 1738125.

It is an arithmetic number, because the mean of its divisors is an integer number (13035765).

Almost surely, 2^83428872 is an apocalyptic number.

It is an amenable number.

83428872 is an abundant number, since it is smaller than the sum of its proper divisors (125143368).

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

83428872 is a wasteful number, since it uses less digits than its factorization.

83428872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476212 (or 3476208 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 83428872 is about 9133.9406610729. The cubic root of 83428872 is about 436.9570900446.

The spelling of 83428872 in words is "eighty-three million, four hundred twenty-eight thousand, eight hundred seventy-two".