905240240 has 40 divisors (see below), whose sum is σ = 2106033360. Its totient is φ = 361863936.

The previous prime is 905240227. The next prime is 905240251. The reversal of 905240240 is 42042509.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179027 + ... + 184013.

It is an arithmetic number, because the mean of its divisors is an integer number (52650834).

Almost surely, 2^905240240 is an apocalyptic number.

It is an amenable number.

905240240 is an abundant number, since it is smaller than the sum of its proper divisors (1200793120).

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

905240240 is a wasteful number, since it uses less digits than its factorization.

905240240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269 (or 7263 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 905240240 is about 30087.2105719357. The cubic root of 905240240 is about 967.3596099046.

Adding to 905240240 its reverse (42042509), we get a palindrome (947282749).

The spelling of 905240240 in words is "nine hundred five million, two hundred forty thousand, two hundred forty".