805241280 has 224 divisors, whose sum is σ = 2719791360. Its totient is φ = 201277440.

The previous prime is 805241279. The next prime is 805241303. The reversal of 805241280 is 82142508.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2389272 + ... + 2389608.

Almost surely, 2^805241280 is an apocalyptic number.

805241280 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 805241280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359895680).

805241280 is an abundant number, since it is smaller than the sum of its proper divisors (1914550080).

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

805241280 is a wasteful number, since it uses less digits than its factorization.

805241280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 805241280 is about 28376.7736009575. The cubic root of 805241280 is about 930.3406775927.

Adding to 805241280 its reverse (82142508), we get a palindrome (887383788).

The spelling of 805241280 in words is "eight hundred five million, two hundred forty-one thousand, two hundred eighty".