13802020 has 24 divisors (see below), whose sum is σ = 29602944. Its totient is φ = 5402976.

The previous prime is 13802003. The next prime is 13802051. The reversal of 13802020 is 2020831.

It is a happy number.

13802020 is a modest number, since divided by 2020 gives 1380 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 13801985 and 13802003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6402 + ... + 8281.

It is an arithmetic number, because the mean of its divisors is an integer number (1233456).

Almost surely, 2^13802020 is an apocalyptic number.

13802020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13802020 is an abundant number, since it is smaller than the sum of its proper divisors (15800924).

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

13802020 is a wasteful number, since it uses less digits than its factorization.

13802020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14739 (or 14737 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 13802020 is about 3715.1069971133. The cubic root of 13802020 is about 239.8727334513.

Adding to 13802020 its reverse (2020831), we get a palindrome (15822851).

The spelling of 13802020 in words is "thirteen million, eight hundred two thousand, twenty".