990325260 has 144 divisors (see below), whose sum is σ = 3208068864. Its totient is φ = 246685824.

The previous prime is 990325247. The next prime is 990325261. The reversal of 990325260 is 62523099.

990325260 is a nontrivial binomial coefficient, being equal to C(44505, 2).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (990325261) 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 47 ways as a sum of consecutive naturals, for example, 175239 + ... + 180801.

It is an arithmetic number, because the mean of its divisors is an integer number (22278256).

Almost surely, 2^990325260 is an apocalyptic number.

990325260 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

990325260 is the 44504-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990325260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604034432).

990325260 is an abundant number, since it is smaller than the sum of its proper divisors (2217743604).

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

990325260 is a wasteful number, since it uses less digits than its factorization.

990325260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5644 (or 5639 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 990325260 is about 31469.4337413307. The cubic root of 990325260 is about 996.7646303387.

The spelling of 990325260 in words is "nine hundred ninety million, three hundred twenty-five thousand, two hundred sixty".