800812980 has 120 divisors (see below), whose sum is σ = 2740620960. Its totient is φ = 194132160.

The previous prime is 800812979. The next prime is 800812981. The reversal of 800812980 is 89218008.

It is an interprime number because it is at equal distance from previous prime (800812979) and next prime (800812981).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800812981) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4650 + ... + 40289.

It is an arithmetic number, because the mean of its divisors is an integer number (22838508).

Almost surely, 2^800812980 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 800812980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370310480).

800812980 is an abundant number, since it is smaller than the sum of its proper divisors (1939807980).

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

800812980 is a wasteful number, since it uses less digits than its factorization.

800812980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44971 (or 44960 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 800812980 is about 28298.6391898975. The cubic root of 800812980 is about 928.6321201695.

The spelling of 800812980 in words is "eight hundred million, eight hundred twelve thousand, nine hundred eighty".