1213630 has 48 divisors (see below), whose sum is σ = 2585520. Its totient is φ = 408320.

The previous prime is 1213627. The next prime is 1213631. The reversal of 1213630 is 363121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20541 + ... + 20599.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2^1213630 is an apocalyptic number.

1213630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213630 is an abundant number, since it is smaller than the sum of its proper divisors (1371890).

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

1213630 is a wasteful number, since it uses less digits than its factorization.

1213630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213630 is about 1101.6487643528. The cubic root of 1213630 is about 106.6666775174. Note that the first 4 decimals are identical.

Adding to 1213630 its reverse (363121), we get a palindrome (1576751).

The spelling of 1213630 in words is "one million, two hundred thirteen thousand, six hundred thirty".