990145828 has 24 divisors (see below), whose sum is σ = 2044173824. Its totient is φ = 410659200.

The previous prime is 990145823. The next prime is 990145829. The reversal of 990145828 is 828541099.

It is not an unprimeable number, because it can be changed into a prime (990145823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569493 + ... + 571228.

Almost surely, 2^990145828 is an apocalyptic number.

It is an amenable number.

990145828 is an abundant number, since it is smaller than the sum of its proper divisors (1054027996).

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

990145828 is a wasteful number, since it uses less digits than its factorization.

990145828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140763 (or 1140761 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 990145828 is about 31466.5827188146. The cubic root of 990145828 is about 996.7044271303.

The spelling of 990145828 in words is "nine hundred ninety million, one hundred forty-five thousand, eight hundred twenty-eight".