1990632 has 96 divisors (see below), whose sum is σ = 6189120. Its totient is φ = 522240.

The previous prime is 1990621. The next prime is 1990643. The reversal of 1990632 is 2360991.

It is an interprime number because it is at equal distance from previous prime (1990621) and next prime (1990643).

It is a self number, because there is not a number n which added to its sum of digits gives 1990632.

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, 48532 + ... + 48572.

It is an arithmetic number, because the mean of its divisors is an integer number (64470).

2^1990632 is an apocalyptic number.

1990632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1990632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3094560).

1990632 is an abundant number, since it is smaller than the sum of its proper divisors (4198488).

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

1990632 is a wasteful number, since it uses less digits than its factorization.

1990632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1990632 is about 1410.8975866448. The cubic root of 1990632 is about 125.7950813757.

The spelling of 1990632 in words is "one million, nine hundred ninety thousand, six hundred thirty-two".