801542844 has 24 divisors (see below), whose sum is σ = 2078074320. Its totient is φ = 267180912.

The previous prime is 801542839. The next prime is 801542857. The reversal of 801542844 is 448245108.

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

It is a junction number, because it is equal to n+sod(n) for n = 801542799 and 801542808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3710739 + ... + 3710954.

It is an arithmetic number, because the mean of its divisors is an integer number (86586430).

Almost surely, 2^801542844 is an apocalyptic number.

It is an amenable number.

801542844 is an abundant number, since it is smaller than the sum of its proper divisors (1276531476).

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

801542844 is a wasteful number, since it uses less digits than its factorization.

801542844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7421706 (or 7421698 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 801542844 is about 28311.5319966970. The cubic root of 801542844 is about 928.9141541216.

The spelling of 801542844 in words is "eight hundred one million, five hundred forty-two thousand, eight hundred forty-four".