805420896 has 96 divisors (see below), whose sum is σ = 2423151360. Its totient is φ = 229464576.

The previous prime is 805420871. The next prime is 805420927. The reversal of 805420896 is 698024508.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265275 + ... + 268293.

It is an arithmetic number, because the mean of its divisors is an integer number (25241160).

Almost surely, 2^805420896 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 805420896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211575680).

805420896 is an abundant number, since it is smaller than the sum of its proper divisors (1617730464).

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

805420896 is a wasteful number, since it uses less digits than its factorization.

805420896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436 (or 3428 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 805420896 is about 28379.9382663176. The cubic root of 805420896 is about 930.4098459493.

The spelling of 805420896 in words is "eight hundred five million, four hundred twenty thousand, eight hundred ninety-six".