815542022 has 8 divisors (see below), whose sum is σ = 1226944056. Its totient is φ = 406560672.

The previous prime is 815542009. The next prime is 815542061. The reversal of 815542022 is 220245518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604328 + ... + 605675.

It is an arithmetic number, because the mean of its divisors is an integer number (153368007).

Almost surely, 2^815542022 is an apocalyptic number.

815542022 is a deficient number, since it is larger than the sum of its proper divisors (411402034).

815542022 is a wasteful number, since it uses less digits than its factorization.

815542022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210342.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 815542022 is about 28557.6963706809. The cubic root of 815542022 is about 934.2908907515.

The spelling of 815542022 in words is "eight hundred fifteen million, five hundred forty-two thousand, twenty-two".