815434648 has 32 divisors (see below), whose sum is σ = 1850148000. Its totient is φ = 328914432.

The previous prime is 815434619. The next prime is 815434657. The reversal of 815434648 is 846434518.

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 7 ways as a sum of consecutive naturals, for example, 427323 + ... + 429226.

It is an arithmetic number, because the mean of its divisors is an integer number (57817125).

Almost surely, 2^815434648 is an apocalyptic number.

It is an amenable number.

815434648 is an abundant number, since it is smaller than the sum of its proper divisors (1034713352).

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

815434648 is a wasteful number, since it uses less digits than its factorization.

815434648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856579 (or 856575 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The square root of 815434648 is about 28555.8163602444. The cubic root of 815434648 is about 934.2498861393.

The spelling of 815434648 in words is "eight hundred fifteen million, four hundred thirty-four thousand, six hundred forty-eight".