82880940 has 24 divisors (see below), whose sum is σ = 232066800. Its totient is φ = 22101568.

The previous prime is 82880939. The next prime is 82880947. The reversal of 82880940 is 4908828.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (82880947) 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, 690615 + ... + 690734.

It is an arithmetic number, because the mean of its divisors is an integer number (9669450).

Almost surely, 2^82880940 is an apocalyptic number.

It is an amenable number.

82880940 is an abundant number, since it is smaller than the sum of its proper divisors (149185860).

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

82880940 is a wasteful number, since it uses less digits than its factorization.

82880940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381361 (or 1381359 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 82880940 is about 9103.8969677825. The cubic root of 82880940 is about 435.9983937881.

The spelling of 82880940 in words is "eighty-two million, eight hundred eighty thousand, nine hundred forty".