83290040 has 32 divisors (see below), whose sum is σ = 189071280. Its totient is φ = 33019392.

The previous prime is 83290037. The next prime is 83290043. The reversal of 83290040 is 4009238.

It is an interprime number because it is at equal distance from previous prime (83290037) and next prime (83290043).

It is a junction number, because it is equal to n+sod(n) for n = 83289991 and 83290009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83290043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4694 + ... + 13733.

Almost surely, 2^83290040 is an apocalyptic number.

It is an amenable number.

83290040 is an abundant number, since it is smaller than the sum of its proper divisors (105781240).

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

83290040 is a wasteful number, since it uses less digits than its factorization.

83290040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18551 (or 18547 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 83290040 is about 9126.3377101661. The cubic root of 83290040 is about 436.7145788450.

Adding to 83290040 its reverse (4009238), we get a palindrome (87299278).

The spelling of 83290040 in words is "eighty-three million, two hundred ninety thousand, forty".