13409900028 has 192 divisors, whose sum is σ = 42159308800. Its totient is φ = 3600676800.

The previous prime is 13409900017. The next prime is 13409900057. The reversal of 13409900028 is 82000990431.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13409899965 and 13409900001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1820553 + ... + 1827903.

Almost surely, 2^13409900028 is an apocalyptic number.

13409900028 is a gapful number since it is divisible by the number (18) 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 13409900028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21079654400).

13409900028 is an abundant number, since it is smaller than the sum of its proper divisors (28749408772).

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

13409900028 is a wasteful number, since it uses less digits than its factorization.

13409900028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517 (or 7509 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 13409900028 in words is "thirteen billion, four hundred nine million, nine hundred thousand, twenty-eight".