905764240 has 20 divisors (see below), whose sum is σ = 2105902044. Its totient is φ = 362305664.

The previous prime is 905764207. The next prime is 905764241. The reversal of 905764240 is 42467509.

It can be written as a sum of positive squares in 2 ways, for example, as 289136016 + 616628224 = 17004^2 + 24832^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 905764240.

It is not an unprimeable number, because it can be changed into a prime (905764241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5660947 + ... + 5661106.

Almost surely, 2^905764240 is an apocalyptic number.

It is an amenable number.

905764240 is an abundant number, since it is smaller than the sum of its proper divisors (1200137804).

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

905764240 is a wasteful number, since it uses less digits than its factorization.

905764240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11322066 (or 11322060 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 905764240 is about 30095.9173310933. The cubic root of 905764240 is about 967.5462265391.

The spelling of 905764240 in words is "nine hundred five million, seven hundred sixty-four thousand, two hundred forty".