80231820 has 96 divisors (see below), whose sum is σ = 239597568. Its totient is φ = 20013312.

The previous prime is 80231819. The next prime is 80231821. The reversal of 80231820 is 2813208.

It is an interprime number because it is at equal distance from previous prime (80231819) and next prime (80231821).

It is not an unprimeable number, because it can be changed into a prime (80231821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64242 + ... + 65478.

It is an arithmetic number, because the mean of its divisors is an integer number (2495808).

Almost surely, 2^80231820 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 80231820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119798784).

80231820 is an abundant number, since it is smaller than the sum of its proper divisors (159365748).

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

80231820 is a wasteful number, since it uses less digits than its factorization.

80231820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 80231820 is about 8957.2216674592. The cubic root of 80231820 is about 431.3027375118.

The spelling of 80231820 in words is "eighty million, two hundred thirty-one thousand, eight hundred twenty".