813428398 has 32 divisors (see below), whose sum is σ = 1275264000. Its totient is φ = 388883040.

The previous prime is 813428347. The next prime is 813428401. The reversal of 813428398 is 893824318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661248 + ... + 662476.

It is an arithmetic number, because the mean of its divisors is an integer number (39852000).

Almost surely, 2^813428398 is an apocalyptic number.

813428398 is a deficient number, since it is larger than the sum of its proper divisors (461835602).

813428398 is a wasteful number, since it uses less digits than its factorization.

813428398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440.

The product of its digits is 331776, while the sum is 46.

The square root of 813428398 is about 28520.6661563155. Note that the first 3 decimals coincide. The cubic root of 813428398 is about 933.4830647817.

The spelling of 813428398 in words is "eight hundred thirteen million, four hundred twenty-eight thousand, three hundred ninety-eight".