83520040 has 32 divisors (see below), whose sum is σ = 189060480. Its totient is φ = 33205312.

The previous prime is 83520037. The next prime is 83520043. The reversal of 83520040 is 4002538.

It is an interprime number because it is at equal distance from previous prime (83520037) and next prime (83520043).

It is a junction number, because it is equal to n+sod(n) for n = 83519993 and 83520020.

It is not an unprimeable number, because it can be changed into a prime (83520043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429 + ... + 12931.

It is an arithmetic number, because the mean of its divisors is an integer number (5908140).

Almost surely, 2^83520040 is an apocalyptic number.

It is an amenable number.

83520040 is an abundant number, since it is smaller than the sum of its proper divisors (105540440).

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

83520040 is a wasteful number, since it uses less digits than its factorization.

83520040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12681 (or 12677 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 83520040 is about 9138.9299154770. The cubic root of 83520040 is about 437.1161956444.

Adding to 83520040 its reverse (4002538), we get a palindrome (87522578).

The spelling of 83520040 in words is "eighty-three million, five hundred twenty thousand, forty".