13773730 has 16 divisors (see below), whose sum is σ = 24857784. Its totient is φ = 5495040.

The previous prime is 13773719. The next prime is 13773737. The reversal of 13773730 is 3737731.

It can be written as a sum of positive squares in 4 ways, for example, as 4791721 + 8982009 = 2189^2 + 2997^2 .

It is a super-2 number, since 2×13773730² = 379431276225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13773692 and 13773701.

It is not an unprimeable number, because it can be changed into a prime (13773737) by changing a digit.

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, 2740 + ... + 5920.

Almost surely, 2^13773730 is an apocalyptic number.

13773730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13773730 is a deficient number, since it is larger than the sum of its proper divisors (11084054).

13773730 is a wasteful number, since it uses less digits than its factorization.

13773730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621.

The product of its (nonzero) digits is 9261, while the sum is 31.

The square root of 13773730 is about 3711.2976167373. The cubic root of 13773730 is about 239.7087323042.

The spelling of 13773730 in words is "thirteen million, seven hundred seventy-three thousand, seven hundred thirty".