13402026 has 48 divisors (see below), whose sum is σ = 32011200. Its totient is φ = 4018560.

The previous prime is 13402009. The next prime is 13402033. The reversal of 13402026 is 62020431.

It is a happy number.

It is a super-2 number, since 2×13402026² = 359228601809352, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22075 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (666900).

Almost surely, 2^13402026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13402026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16005600).

13402026 is an abundant number, since it is smaller than the sum of its proper divisors (18609174).

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

13402026 is a wasteful number, since it uses less digits than its factorization.

13402026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13402026 is about 3660.8777635971. The cubic root of 13402026 is about 237.5327437772.

Adding to 13402026 its reverse (62020431), we get a palindrome (75422457).

The spelling of 13402026 in words is "thirteen million, four hundred two thousand, twenty-six".