990748 has 36 divisors (see below), whose sum is σ = 2010960. Its totient is φ = 425920.

The previous prime is 990733. The next prime is 990761. The reversal of 990748 is 847099.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11088 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2⁹⁹⁰⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

990748 is an abundant number, since it is smaller than the sum of its proper divisors (1020212).

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

990748 is a wasteful number, since it uses less digits than its factorization.

990748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 990748 is about 995.3632502760. The cubic root of 990748 is about 99.6906439754.

The spelling of 990748 in words is "nine hundred ninety thousand, seven hundred forty-eight".