13764220 has 24 divisors (see below), whose sum is σ = 30605904. Its totient is φ = 5181696.

The previous prime is 13764167. The next prime is 13764221. The reversal of 13764220 is 2246731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13764221) 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, 19902 + ... + 20581.

It is an arithmetic number, because the mean of its divisors is an integer number (1275246).

Almost surely, 2^13764220 is an apocalyptic number.

13764220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13764220 is an abundant number, since it is smaller than the sum of its proper divisors (16841684).

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

13764220 is a wasteful number, since it uses less digits than its factorization.

13764220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40509 (or 40507 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 13764220 is about 3710.0161724715. The cubic root of 13764220 is about 239.6535510546.

The spelling of 13764220 in words is "thirteen million, seven hundred sixty-four thousand, two hundred twenty".