1630332 has 72 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 469920.

The previous prime is 1630303. The next prime is 1630357. The reversal of 1630332 is 2330361.

It is a happy number.

1630332 is a `hidden beast` number, since 1 + 630 + 3 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a congruent number.

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, 9019 + ... + 9197.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2^1630332 is an apocalyptic number.

1630332 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 1630332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2358720).

1630332 is an abundant number, since it is smaller than the sum of its proper divisors (3087108).

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

1630332 is a wasteful number, since it uses less digits than its factorization.

1630332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1630332 is about 1276.8445480950. The cubic root of 1630332 is about 117.6951818618.

Adding to 1630332 its reverse (2330361), we get a palindrome (3960693).

The spelling of 1630332 in words is "one million, six hundred thirty thousand, three hundred thirty-two".