13003902 has 36 divisors (see below), whose sum is σ = 29286816. Its totient is φ = 4330260.

The previous prime is 13003889. The next prime is 13003937. The reversal of 13003902 is 20930031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12627 + ... + 13617.

Almost surely, 2^13003902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13003902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14643408).

13003902 is an abundant number, since it is smaller than the sum of its proper divisors (16282914).

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

13003902 is an frugal number, since it uses more digits than its factorization.

13003902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 13003902 is about 3606.0923449074. The cubic root of 13003902 is about 235.1569918237.

Adding to 13003902 its reverse (20930031), we get a palindrome (33933933).

The spelling of 13003902 in words is "thirteen million, three thousand, nine hundred two".