904040280 has 384 divisors, whose sum is σ = 3658374720. Its totient is φ = 190218240.

The previous prime is 904040257. The next prime is 904040281. The reversal of 904040280 is 82040409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904040281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 874644 + ... + 875676.

Almost surely, 2^904040280 is an apocalyptic number.

904040280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 904040280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829187360).

904040280 is an abundant number, since it is smaller than the sum of its proper divisors (2754334440).

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

904040280 is a wasteful number, since it uses less digits than its factorization.

904040280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 904040280 is about 30067.2625957203. The cubic root of 904040280 is about 966.9319863602.

Adding to 904040280 its reverse (82040409), we get a palindrome (986080689).

The spelling of 904040280 in words is "nine hundred four million, forty thousand, two hundred eighty".