13773424 has 40 divisors (see below), whose sum is σ = 31490048. Its totient is φ = 5711040.

The previous prime is 13773379. The next prime is 13773427. The reversal of 13773424 is 42437731.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13773427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1489 + ... + 5455.

Almost surely, 2^13773424 is an apocalyptic number.

13773424 is a gapful number since it is divisible by the number (14) 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 13773424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15745024).

13773424 is an abundant number, since it is smaller than the sum of its proper divisors (17716624).

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

13773424 is a wasteful number, since it uses less digits than its factorization.

13773424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013 (or 4007 counting only the distinct ones).

The product of its digits is 14112, while the sum is 31.

The square root of 13773424 is about 3711.2563910353. The cubic root of 13773424 is about 239.7069571516.

The spelling of 13773424 in words is "thirteen million, seven hundred seventy-three thousand, four hundred twenty-four".