990502266 has 128 divisors (see below), whose sum is σ = 2299207680. Its totient is φ = 282297600.

The previous prime is 990502259. The next prime is 990502301. The reversal of 990502266 is 662205099.

It is a super-2 number, since 2×990502266² = 1962189477902269512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7561021 + ... + 7561151.

It is an arithmetic number, because the mean of its divisors is an integer number (17962560).

Almost surely, 2^990502266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990502266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149603840).

990502266 is an abundant number, since it is smaller than the sum of its proper divisors (1308705414).

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

990502266 is a wasteful number, since it uses less digits than its factorization.

990502266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 990502266 is about 31472.2459637059. The cubic root of 990502266 is about 996.8240124484.

The spelling of 990502266 in words is "nine hundred ninety million, five hundred two thousand, two hundred sixty-six".