13773720 has 32 divisors (see below), whose sum is σ = 41321520. Its totient is φ = 3672960.

The previous prime is 13773719. The next prime is 13773737. The reversal of 13773720 is 2737731.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57271 + ... + 57510.

Almost surely, 2^13773720 is an apocalyptic number.

13773720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13773720 is an abundant number, since it is smaller than the sum of its proper divisors (27547800).

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

13773720 is a wasteful number, since it uses less digits than its factorization.

13773720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114795 (or 114791 counting only the distinct ones).

The product of its (nonzero) digits is 6174, while the sum is 30.

The square root of 13773720 is about 3711.2962694994. The cubic root of 13773720 is about 239.7086742931.

The spelling of 13773720 in words is "thirteen million, seven hundred seventy-three thousand, seven hundred twenty".