990263652 has 72 divisors (see below), whose sum is σ = 2707067328. Its totient is φ = 275992320.

The previous prime is 990263647. The next prime is 990263711. The reversal of 990263652 is 256362099.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137698 + ... + 144710.

Almost surely, 2^990263652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990263652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353533664).

990263652 is an abundant number, since it is smaller than the sum of its proper divisors (1716803676).

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

990263652 is a wasteful number, since it uses less digits than its factorization.

990263652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109 (or 7066 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 990263652 is about 31468.4548715058. The cubic root of 990263652 is about 996.7439603793.

The spelling of 990263652 in words is "nine hundred ninety million, two hundred sixty-three thousand, six hundred fifty-two".