1230736 has 40 divisors (see below), whose sum is σ = 2636984. Its totient is φ = 552960.

The previous prime is 1230727. The next prime is 1230739. The reversal of 1230736 is 6370321.

It can be written as a sum of positive squares in 4 ways, for example, as 20736 + 1210000 = 144^2 + 1100^2 .

It is a super-2 number, since 2×1230736² = 3029422203392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12640 + ... + 12736.

2^1230736 is an apocalyptic number.

1230736 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 1230736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318492).

1230736 is an abundant number, since it is smaller than the sum of its proper divisors (1406248).

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

1230736 is a wasteful number, since it uses less digits than its factorization.

1230736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 1230736 is about 1109.3854154441. The cubic root of 1230736 is about 107.1654934606.

The spelling of 1230736 in words is "one million, two hundred thirty thousand, seven hundred thirty-six".