13400215426 has 32 divisors (see below), whose sum is σ = 23366568960. Its totient is φ = 5711813184.

The previous prime is 13400215421. The next prime is 13400215429. The reversal of 13400215426 is 62451200431.

It is a super-2 number, since 2×13400215426² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13400215394 and 13400215403.

It is not an unprimeable number, because it can be changed into a prime (13400215421) 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, 369010 + ... + 403693.

It is an arithmetic number, because the mean of its divisors is an integer number (730205280).

Almost surely, 2^13400215426 is an apocalyptic number.

13400215426 is a deficient number, since it is larger than the sum of its proper divisors (9966353534).

13400215426 is a wasteful number, since it uses less digits than its factorization.

13400215426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772770.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 13400215426 its reverse (62451200431), we get a palindrome (75851415857).

It can be divided in two parts, 13400 and 215426, that added together give a triangular number (228826 = T₆₇₆).

The spelling of 13400215426 in words is "thirteen billion, four hundred million, two hundred fifteen thousand, four hundred twenty-six".