83520828 has 24 divisors (see below), whose sum is σ = 216535760. Its totient is φ = 27840240.

The previous prime is 83520823. The next prime is 83520887. The reversal of 83520828 is 82802538.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 83520792 and 83520801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83520823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386563 + ... + 386778.

Almost surely, 2^83520828 is an apocalyptic number.

It is an amenable number.

83520828 is an abundant number, since it is smaller than the sum of its proper divisors (133014932).

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

83520828 is a wasteful number, since it uses less digits than its factorization.

83520828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773354 (or 773346 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 83520828 is about 9138.9730276438. The cubic root of 83520828 is about 437.1175703503.

It can be divided in two parts, 83520 and 828, that added together give a palindrome (84348).

The spelling of 83520828 in words is "eighty-three million, five hundred twenty thousand, eight hundred twenty-eight".