904725720 has 128 divisors (see below), whose sum is σ = 3193214400. Its totient is φ = 227063808.

The previous prime is 904725713. The next prime is 904725727. The reversal of 904725720 is 27527409.

904725720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (904725713) and next prime (904725727).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904725727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6279 + ... + 42998.

Almost surely, 2^904725720 is an apocalyptic number.

904725720 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 904725720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596607200).

904725720 is an abundant number, since it is smaller than the sum of its proper divisors (2288488680).

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

904725720 is a wasteful number, since it uses less digits than its factorization.

904725720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49314 (or 49304 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 904725720 is about 30078.6588796775. The cubic root of 904725720 is about 967.1762993780.

The spelling of 904725720 in words is "nine hundred four million, seven hundred twenty-five thousand, seven hundred twenty".