83621028 has 48 divisors (see below), whose sum is σ = 207446400. Its totient is φ = 26125824.

The previous prime is 83620993. The next prime is 83621029. The reversal of 83621028 is 82012638.

It is a junction number, because it is equal to n+sod(n) for n = 83620986 and 83621004.

It is not an unprimeable number, because it can be changed into a prime (83621029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59073 + ... + 60471.

It is an arithmetic number, because the mean of its divisors is an integer number (4321800).

Almost surely, 2^83621028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83621028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103723200).

83621028 is an abundant number, since it is smaller than the sum of its proper divisors (123825372).

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

83621028 is a wasteful number, since it uses less digits than its factorization.

83621028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 83621028 is about 9144.4534008327. The cubic root of 83621028 is about 437.2923039186.

The spelling of 83621028 in words is "eighty-three million, six hundred twenty-one thousand, twenty-eight".