820475094 has 8 divisors (see below), whose sum is σ = 1640950200. Its totient is φ = 273491696.

The previous prime is 820475087. The next prime is 820475137. The reversal of 820475094 is 490574028.

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

820475094 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 68372919 + ... + 68372930.

It is an arithmetic number, because the mean of its divisors is an integer number (205118775).

Almost surely, 2^820475094 is an apocalyptic number.

820475094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

820475094 is a wasteful number, since it uses less digits than its factorization.

820475094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136745854.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 820475094 is about 28643.9364264062. The cubic root of 820475094 is about 936.1708929878.

The spelling of 820475094 in words is "eight hundred twenty million, four hundred seventy-five thousand, ninety-four".