12251630 has 32 divisors (see below), whose sum is σ = 23133600. Its totient is φ = 4665472.

The previous prime is 12251623. The next prime is 12251633. The reversal of 12251630 is 3615221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12251633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23816 + ... + 24324.

It is an arithmetic number, because the mean of its divisors is an integer number (722925).

Almost surely, 2^12251630 is an apocalyptic number.

12251630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12251630 is a deficient number, since it is larger than the sum of its proper divisors (10881970).

12251630 is a wasteful number, since it uses less digits than its factorization.

12251630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12251630 is about 3500.2328493973. The cubic root of 12251630 is about 230.5320386544.

Adding to 12251630 its reverse (3615221), we get a palindrome (15866851).

The spelling of 12251630 in words is "twelve million, two hundred fifty-one thousand, six hundred thirty".