13121634 has 16 divisors (see below), whose sum is σ = 26739072. Its totient is φ = 4291248.

The previous prime is 13121629. The next prime is 13121639. The reversal of 13121634 is 43612131.

It is an interprime number because it is at equal distance from previous prime (13121629) and next prime (13121639).

It is a self number, because there is not a number n which added to its sum of digits gives 13121634.

It is not an unprimeable number, because it can be changed into a prime (13121639) 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, 20314 + ... + 20949.

It is an arithmetic number, because the mean of its divisors is an integer number (1671192).

Almost surely, 2^13121634 is an apocalyptic number.

13121634 is an abundant number, since it is smaller than the sum of its proper divisors (13617438).

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

13121634 is a wasteful number, since it uses less digits than its factorization.

13121634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41321.

The product of its digits is 432, while the sum is 21.

The square root of 13121634 is about 3622.3796046246. The cubic root of 13121634 is about 235.8645325198.

Adding to 13121634 its reverse (43612131), we get a palindrome (56733765).

The spelling of 13121634 in words is "thirteen million, one hundred twenty-one thousand, six hundred thirty-four".