990000732 has 48 divisors (see below), whose sum is σ = 2642492160. Its totient is φ = 282590592.

The previous prime is 990000731. The next prime is 990000733. The reversal of 990000732 is 237000099.

It is an interprime number because it is at equal distance from previous prime (990000731) and next prime (990000733).

It is a self number, because there is not a number n which added to its sum of digits gives 990000732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990000731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94744 + ... + 104672.

It is an arithmetic number, because the mean of its divisors is an integer number (55051920).

Almost surely, 2^990000732 is an apocalyptic number.

It is an amenable number.

990000732 is an abundant number, since it is smaller than the sum of its proper divisors (1652491428).

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

990000732 is a wasteful number, since it uses less digits than its factorization.

990000732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130 (or 11128 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 990000732 is about 31464.2770773460. The cubic root of 990000732 is about 996.6557390529.

The spelling of 990000732 in words is "nine hundred ninety million, seven hundred thirty-two", and thus it is an aban number.