13402004 has 48 divisors (see below), whose sum is σ = 29828736. Its totient is φ = 5116800.

The previous prime is 13401989. The next prime is 13402007. The reversal of 13402004 is 40020431.

It is a super-2 number, since 2×13402004² = 359227422432032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 13402004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15914 + ... + 16734.

It is an arithmetic number, because the mean of its divisors is an integer number (621432).

Almost surely, 2^13402004 is an apocalyptic number.

13402004 is a gapful number since it is divisible by the number (14) 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 13402004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14914368).

13402004 is an abundant number, since it is smaller than the sum of its proper divisors (16426732).

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

13402004 is a wasteful number, since it uses less digits than its factorization.

13402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 13402004 is about 3660.8747588520. The cubic root of 13402004 is about 237.5326138038.

Adding to 13402004 its reverse (40020431), we get a palindrome (53422435).

The spelling of 13402004 in words is "thirteen million, four hundred two thousand, four".