904988820 has 96 divisors (see below), whose sum is σ = 2661619968. Its totient is φ = 229312512.

The previous prime is 904988803. The next prime is 904988827. The reversal of 904988820 is 28889409.

It is a self number, because there is not a number n which added to its sum of digits gives 904988820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904988827) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 214572 + ... + 218748.

It is an arithmetic number, because the mean of its divisors is an integer number (27725208).

Almost surely, 2^904988820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 904988820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330809984).

904988820 is an abundant number, since it is smaller than the sum of its proper divisors (1756631148).

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

904988820 is a wasteful number, since it uses less digits than its factorization.

904988820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 904988820 is about 30083.0320945213. The cubic root of 904988820 is about 967.2700439668.

The spelling of 904988820 in words is "nine hundred four million, nine hundred eighty-eight thousand, eight hundred twenty".