12621310 has 32 divisors (see below), whose sum is σ = 25909632. Its totient is φ = 4385280.

The previous prime is 12621307. The next prime is 12621337. The reversal of 12621310 is 1312621.

It is a super-2 number, since 2×12621310² = 318594932232200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (809676).

Almost surely, 2^12621310 is an apocalyptic number.

12621310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12621310 is an abundant number, since it is smaller than the sum of its proper divisors (13288322).

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

12621310 is a wasteful number, since it uses less digits than its factorization.

12621310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5748.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 12621310 is about 3552.6483079528. The cubic root of 12621310 is about 232.8277875492.

Adding to 12621310 its reverse (1312621), we get a palindrome (13933931).

The spelling of 12621310 in words is "twelve million, six hundred twenty-one thousand, three hundred ten".