905838220 has 24 divisors (see below), whose sum is σ = 2174012064. Its totient is φ = 310573056.

The previous prime is 905838169. The next prime is 905838221. The reversal of 905838220 is 22838509.

It is a self number, because there is not a number n which added to its sum of digits gives 905838220.

It is not an unprimeable number, because it can be changed into a prime (905838221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3234997 + ... + 3235276.

It is an arithmetic number, because the mean of its divisors is an integer number (90583836).

Almost surely, 2^905838220 is an apocalyptic number.

It is an amenable number.

905838220 is an abundant number, since it is smaller than the sum of its proper divisors (1268173844).

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

905838220 is a wasteful number, since it uses less digits than its factorization.

905838220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470289 (or 6470287 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 905838220 is about 30097.1463763593. The cubic root of 905838220 is about 967.5725678753.

It can be divided in two parts, 9058 and 38220, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 905838220 in words is "nine hundred five million, eight hundred thirty-eight thousand, two hundred twenty".