801236540 has 48 divisors (see below), whose sum is σ = 1870498560. Its totient is φ = 286295040.

The previous prime is 801236531. The next prime is 801236543. The reversal of 801236540 is 45632108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801236543) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41645 + ... + 57764.

It is an arithmetic number, because the mean of its divisors is an integer number (38968720).

Almost surely, 2^801236540 is an apocalyptic number.

It is an amenable number.

801236540 is an abundant number, since it is smaller than the sum of its proper divisors (1069262020).

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

801236540 is a wasteful number, since it uses less digits than its factorization.

801236540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99462 (or 99460 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 801236540 is about 28306.1219526801. The cubic root of 801236540 is about 928.7958130270.

Adding to 801236540 its reverse (45632108), we get a palindrome (846868648).

The spelling of 801236540 in words is "eight hundred one million, two hundred thirty-six thousand, five hundred forty".