13746820 has 12 divisors (see below), whose sum is σ = 28868364. Its totient is φ = 5498720.

The previous prime is 13746797. The next prime is 13746827. The reversal of 13746820 is 2864731.

It can be written as a sum of positive squares in 2 ways, for example, as 10863616 + 2883204 = 3296^2 + 1698^2 .

It is a super-2 number, since 2×13746820² = 377950120224800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13746827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343651 + ... + 343690.

It is an arithmetic number, because the mean of its divisors is an integer number (2405697).

Almost surely, 2^13746820 is an apocalyptic number.

13746820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13746820 is an abundant number, since it is smaller than the sum of its proper divisors (15121544).

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

13746820 is a wasteful number, since it uses less digits than its factorization.

13746820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687350 (or 687348 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 13746820 is about 3707.6704276405. The cubic root of 13746820 is about 239.5525226836.

The spelling of 13746820 in words is "thirteen million, seven hundred forty-six thousand, eight hundred twenty".