1630016 has 14 divisors (see below), whose sum is σ = 3234690. Its totient is φ = 814976.

The previous prime is 1629997. The next prime is 1630019. The reversal of 1630016 is 6100361.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 92416 = 1240^2 + 304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1629976 and 1630003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671 + ... + 12798.

2^1630016 is an apocalyptic number.

1630016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1630016 is a deficient number, since it is larger than the sum of its proper divisors (1604674).

1630016 is an equidigital number, since it uses as much as digits as its factorization.

1630016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25481 (or 25471 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1630016 is about 1276.7207995486. The cubic root of 1630016 is about 117.6875772593.

Adding to 1630016 its reverse (6100361), we get a palindrome (7730377).

The spelling of 1630016 in words is "one million, six hundred thirty thousand, sixteen".