13451940 has 96 divisors (see below), whose sum is σ = 43344000. Its totient is φ = 3459456.

The previous prime is 13451909. The next prime is 13451953. The reversal of 13451940 is 4915431.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15231 + ... + 16089.

It is an arithmetic number, because the mean of its divisors is an integer number (451500).

Almost surely, 2^13451940 is an apocalyptic number.

13451940 is a gapful number since it is divisible by the number (10) 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 13451940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21672000).

13451940 is an abundant number, since it is smaller than the sum of its proper divisors (29892060).

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

13451940 is a wasteful number, since it uses less digits than its factorization.

13451940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13451940 is about 3667.6886454551. The cubic root of 13451940 is about 237.8272644418.

The spelling of 13451940 in words is "thirteen million, four hundred fifty-one thousand, nine hundred forty".