13115420 has 24 divisors (see below), whose sum is σ = 27636000. Its totient is φ = 5228352.

The previous prime is 13115371. The next prime is 13115423. The reversal of 13115420 is 2451131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6041 + ... + 7919.

It is an arithmetic number, because the mean of its divisors is an integer number (1151500).

Almost surely, 2^13115420 is an apocalyptic number.

13115420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13115420 is an abundant number, since it is smaller than the sum of its proper divisors (14520580).

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

13115420 is a wasteful number, since it uses less digits than its factorization.

13115420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237 (or 2235 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 13115420 is about 3621.5217795838. The cubic root of 13115420 is about 235.8272939251.

Adding to 13115420 its reverse (2451131), we get a palindrome (15566551).

It can be divided in two parts, 131 and 15420, that added together give a palindrome (15551).

The spelling of 13115420 in words is "thirteen million, one hundred fifteen thousand, four hundred twenty".