1230656 has 56 divisors (see below), whose sum is σ = 2901696. Its totient is φ = 506880.

The previous prime is 1230637. The next prime is 1230667. The reversal of 1230656 is 6560321.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18335 + ... + 18401.

It is an arithmetic number, because the mean of its divisors is an integer number (51816).

2^1230656 is an apocalyptic number.

1230656 is a gapful number since it is divisible by the number (16) 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 1230656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450848).

1230656 is an abundant number, since it is smaller than the sum of its proper divisors (1671040).

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

1230656 is an equidigital number, since it uses as much as digits as its factorization.

1230656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1230656 is about 1109.3493588586. The cubic root of 1230656 is about 107.1631714286.

Adding to 1230656 its reverse (6560321), we get a palindrome (7790977).

The spelling of 1230656 in words is "one million, two hundred thirty thousand, six hundred fifty-six".