920403878 has 16 divisors (see below), whose sum is σ = 1402652160. Its totient is φ = 452891400.

The previous prime is 920403877. The next prime is 920403901. The reversal of 920403878 is 878304029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920403877) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39773 + ... + 58503.

It is an arithmetic number, because the mean of its divisors is an integer number (87665760).

Almost surely, 2^920403878 is an apocalyptic number.

920403878 is a deficient number, since it is larger than the sum of its proper divisors (482248282).

920403878 is a wasteful number, since it uses less digits than its factorization.

920403878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19123.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 920403878 is about 30338.1587773550. The cubic root of 920403878 is about 972.7311268578.

The spelling of 920403878 in words is "nine hundred twenty million, four hundred three thousand, eight hundred seventy-eight".