1630456 has 8 divisors (see below), whose sum is σ = 3057120. Its totient is φ = 815224.

The previous prime is 1630451. The next prime is 1630457. The reversal of 1630456 is 6540361.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1630456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101896 + ... + 101911.

It is an arithmetic number, because the mean of its divisors is an integer number (382140).

2^1630456 is an apocalyptic number.

It is an amenable number.

1630456 is a deficient number, since it is larger than the sum of its proper divisors (1426664).

1630456 is a wasteful number, since it uses less digits than its factorization.

1630456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203813 (or 203809 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1630456 is about 1276.8931043748. The cubic root of 1630456 is about 117.6981656779.

The spelling of 1630456 in words is "one million, six hundred thirty thousand, four hundred fifty-six".