83274840 has 192 divisors, whose sum is σ = 312867360. Its totient is φ = 18984960.

The previous prime is 83274833. The next prime is 83274871. The reversal of 83274840 is 4847238.

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

It is a junction number, because it is equal to n+sod(n) for n = 83274795 and 83274804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66702 + ... + 67938.

Almost surely, 2^83274840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83274840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156433680).

83274840 is an abundant number, since it is smaller than the sum of its proper divisors (229592520).

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

83274840 is a wasteful number, since it uses less digits than its factorization.

83274840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 83274840 is about 9125.5049175374. The cubic root of 83274840 is about 436.6880111808.

The spelling of 83274840 in words is "eighty-three million, two hundred seventy-four thousand, eight hundred forty".