82840392 has 24 divisors (see below), whose sum is σ = 224359590. Its totient is φ = 27613440.

The previous prime is 82840333. The next prime is 82840397. The reversal of 82840392 is 29304828.

It can be written as a sum of positive squares in only one way, i.e., 73513476 + 9326916 = 8574^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (82840397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575209 + ... + 575352.

Almost surely, 2^82840392 is an apocalyptic number.

It is an amenable number.

82840392 is an abundant number, since it is smaller than the sum of its proper divisors (141519198).

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

82840392 is a wasteful number, since it uses less digits than its factorization.

82840392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150573 (or 1150566 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 82840392 is about 9101.6697369219. The cubic root of 82840392 is about 435.9272807486.

The spelling of 82840392 in words is "eighty-two million, eight hundred forty thousand, three hundred ninety-two".