13039320 has 192 divisors, whose sum is σ = 48280320. Its totient is φ = 2757888.

The previous prime is 13039291. The next prime is 13039331. The reversal of 13039320 is 2393031.

It is a Cunningham number, because it is equal to 3611²-1.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303219 + ... + 303261.

It is an arithmetic number, because the mean of its divisors is an integer number (251460).

Almost surely, 2^13039320 is an apocalyptic number.

13039320 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 13039320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24140160).

13039320 is an abundant number, since it is smaller than the sum of its proper divisors (35241000).

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

13039320 is a wasteful number, since it uses less digits than its factorization.

13039320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 13039320 is about 3610.9998615342. Note that the first 3 decimals coincide. The cubic root of 13039320 is about 235.3702929340.

The spelling of 13039320 in words is "thirteen million, thirty-nine thousand, three hundred twenty".