1630028 has 12 divisors (see below), whose sum is σ = 3020472. Its totient is φ = 767040.

The previous prime is 1630021. The next prime is 1630049. The reversal of 1630028 is 8200361.

It is a junction number, because it is equal to n+sod(n) for n = 1629991 and 1630009.

It is not an unprimeable number, because it can be changed into a prime (1630021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11918 + ... + 12053.

It is an arithmetic number, because the mean of its divisors is an integer number (251706).

2^1630028 is an apocalyptic number.

It is an amenable number.

1630028 is a deficient number, since it is larger than the sum of its proper divisors (1390444).

1630028 is a wasteful number, since it uses less digits than its factorization.

1630028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23992 (or 23990 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1630028 is about 1276.7254990796. The cubic root of 1630028 is about 117.6878660596.

Adding to 1630028 its reverse (8200361), we get a palindrome (9830389).

The spelling of 1630028 in words is "one million, six hundred thirty thousand, twenty-eight".