82880040 has 64 divisors (see below), whose sum is σ = 259459200. Its totient is φ = 21139712.

The previous prime is 82880027. The next prime is 82880069. The reversal of 82880040 is 4008828.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12255 + ... + 17774.

It is an arithmetic number, because the mean of its divisors is an integer number (4054050).

Almost surely, 2^82880040 is an apocalyptic number.

It is an amenable number.

82880040 is an abundant number, since it is smaller than the sum of its proper divisors (176579160).

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

82880040 is a wasteful number, since it uses less digits than its factorization.

82880040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30066 (or 30062 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 82880040 is about 9103.8475382664. The cubic root of 82880040 is about 435.9968156208.

Adding to 82880040 its reverse (4008828), we get a palindrome (86888868).

The spelling of 82880040 in words is "eighty-two million, eight hundred eighty thousand, forty".