1236630 has 16 divisors (see below), whose sum is σ = 2967984. Its totient is φ = 329760.

The previous prime is 1236629. The next prime is 1236643. The reversal of 1236630 is 366321.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1236597 and 1236606.

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, 20581 + ... + 20640.

It is an arithmetic number, because the mean of its divisors is an integer number (185499).

2^1236630 is an apocalyptic number.

1236630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1236630 is an abundant number, since it is smaller than the sum of its proper divisors (1731354).

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

1236630 is a wasteful number, since it uses less digits than its factorization.

1236630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41231.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1236630 is about 1112.0386683924. The cubic root of 1236630 is about 107.3362930998.

The spelling of 1236630 in words is "one million, two hundred thirty-six thousand, six hundred thirty".