83427040 has 48 divisors (see below), whose sum is σ = 198050832. Its totient is φ = 33209344.

The previous prime is 83427031. The next prime is 83427061. The reversal of 83427040 is 4072438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35172 + ... + 37468.

It is an arithmetic number, because the mean of its divisors is an integer number (4126059).

Almost surely, 2^83427040 is an apocalyptic number.

83427040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83427040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99025416).

83427040 is an abundant number, since it is smaller than the sum of its proper divisors (114623792).

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

83427040 is a wasteful number, since it uses less digits than its factorization.

83427040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 83427040 is about 9133.8403752201. The cubic root of 83427040 is about 436.9538916664.

Adding to 83427040 its reverse (4072438), we get a palindrome (87499478).

The spelling of 83427040 in words is "eighty-three million, four hundred twenty-seven thousand, forty".