904513878 has 20 divisors (see below), whose sum is σ = 2026781460. Its totient is φ = 301504572.

The previous prime is 904513871. The next prime is 904513889. The reversal of 904513878 is 878315409.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904513871) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 2791548 + ... + 2791871.

It is an arithmetic number, because the mean of its divisors is an integer number (101339073).

Almost surely, 2^904513878 is an apocalyptic number.

904513878 is an abundant number, since it is smaller than the sum of its proper divisors (1122267582).

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

904513878 is a wasteful number, since it uses less digits than its factorization.

904513878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583433 (or 5583424 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 904513878 is about 30075.1372066696. The cubic root of 904513878 is about 967.1008052067.

The spelling of 904513878 in words is "nine hundred four million, five hundred thirteen thousand, eight hundred seventy-eight".