905828990 has 144 divisors (see below), whose sum is σ = 1996883280. Its totient is φ = 294624000.

The previous prime is 905828953. The next prime is 905828993. The reversal of 905828990 is 99828509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905828993) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 22093370 + ... + 22093410.

It is an arithmetic number, because the mean of its divisors is an integer number (13867245).

Almost surely, 2^905828990 is an apocalyptic number.

905828990 is an abundant number, since it is smaller than the sum of its proper divisors (1091054290).

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

905828990 is a wasteful number, since it uses less digits than its factorization.

905828990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 905828990 is about 30096.9930391725. The cubic root of 905828990 is about 967.5692815177.

The spelling of 905828990 in words is "nine hundred five million, eight hundred twenty-eight thousand, nine hundred ninety".