13021140 has 96 divisors (see below), whose sum is σ = 40360320. Its totient is φ = 3110400.

The previous prime is 13021139. The next prime is 13021163. The reversal of 13021140 is 4112031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71850 + ... + 72030.

It is an arithmetic number, because the mean of its divisors is an integer number (420420).

Almost surely, 2^13021140 is an apocalyptic number.

13021140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13021140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20180160).

13021140 is an abundant number, since it is smaller than the sum of its proper divisors (27339180).

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

13021140 is a wasteful number, since it uses less digits than its factorization.

13021140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13021140 is about 3608.4816751648. The cubic root of 13021140 is about 235.2608541458.

Adding to 13021140 its reverse (4112031), we get a palindrome (17133171).

It can be divided in two parts, 1302 and 1140, that added together give a palindrome (2442).

The spelling of 13021140 in words is "thirteen million, twenty-one thousand, one hundred forty".