13421772 has 144 divisors (see below), whose sum is σ = 44396352. Its totient is φ = 3317760.

The previous prime is 13421767. The next prime is 13421783. The reversal of 13421772 is 27712431.

It is a happy number.

13421772 is nontrivially palindromic in base 16.

13421772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

13421772 is an undulating number in base 4.

13421772 is a nontrivial repdigit in base 16.

It is a plaindrome in base 16.

It is a nialpdrome in base 16.

It is a zygodrome in base 2 and base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55572 + ... + 55812.

It is an arithmetic number, because the mean of its divisors is an integer number (308308).

Almost surely, 2^13421772 is an apocalyptic number.

13421772 is a gapful number since it is divisible by the number (12) 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 13421772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22198176).

13421772 is an abundant number, since it is smaller than the sum of its proper divisors (30974580).

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

13421772 is a wasteful number, since it uses less digits than its factorization.

13421772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 283 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 13421772 is about 3663.5736651526. The cubic root of 13421772 is about 237.6493435593.

The spelling of 13421772 in words is "thirteen million, four hundred twenty-one thousand, seven hundred seventy-two".