73831828 has 36 divisors (see below), whose sum is σ = 151288032. Its totient is φ = 31434480.

The previous prime is 73831781. The next prime is 73831829. The reversal of 73831828 is 82813837.

It is a super-2 number, since 2×73831828² = 10902277651643168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73831829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30793 + ... + 33103.

Almost surely, 2^73831828 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 73831828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75644016).

73831828 is an abundant number, since it is smaller than the sum of its proper divisors (77456204).

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

73831828 is a wasteful number, since it uses less digits than its factorization.

73831828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2483 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 73831828 is about 8592.5449082330. The cubic root of 73831828 is about 419.5153669286.

Subtracting 73831828 from its reverse (82813837), we obtain a square (8982009 = 2997²).

The spelling of 73831828 in words is "seventy-three million, eight hundred thirty-one thousand, eight hundred twenty-eight".