1630828 has 6 divisors (see below), whose sum is σ = 2853956. Its totient is φ = 815412.

The previous prime is 1630813. The next prime is 1630829. The reversal of 1630828 is 8280361.

It is a junction number, because it is equal to n+sod(n) for n = 1630796 and 1630805.

It is not an unprimeable number, because it can be changed into a prime (1630829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203850 + ... + 203857.

2^1630828 is an apocalyptic number.

It is an amenable number.

1630828 is a deficient number, since it is larger than the sum of its proper divisors (1223128).

1630828 is a wasteful number, since it uses less digits than its factorization.

1630828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407711 (or 407709 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1630828 is about 1277.0387621368. The cubic root of 1630828 is about 117.7071162186.

The spelling of 1630828 in words is "one million, six hundred thirty thousand, eight hundred twenty-eight".