13652220 has 24 divisors (see below), whose sum is σ = 38226384. Its totient is φ = 3640576.

The previous prime is 13652209. The next prime is 13652251. The reversal of 13652220 is 2225631.

It is a super-2 number, since 2×13652220² = 372766221856800, which contains 22 as substring.

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, 113709 + ... + 113828.

It is an arithmetic number, because the mean of its divisors is an integer number (1592766).

Almost surely, 2^13652220 is an apocalyptic number.

13652220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13652220 is an abundant number, since it is smaller than the sum of its proper divisors (24574164).

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

13652220 is a wasteful number, since it uses less digits than its factorization.

13652220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227549 (or 227547 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13652220 is about 3694.8910674065. The cubic root of 13652220 is about 239.0017564923.

Adding to 13652220 its reverse (2225631), we get a palindrome (15877851).

The spelling of 13652220 in words is "thirteen million, six hundred fifty-two thousand, two hundred twenty".