13217900 has 36 divisors (see below), whose sum is σ = 28930440. Its totient is φ = 5241600.

The previous prime is 13217861. The next prime is 13217903. The reversal of 13217900 is 971231.

It is not an unprimeable number, because it can be changed into a prime (13217903) 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 11 ways as a sum of consecutive naturals, for example, 12596 + ... + 13604.

Almost surely, 2^13217900 is an apocalyptic number.

13217900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13217900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14465220).

13217900 is an abundant number, since it is smaller than the sum of its proper divisors (15712540).

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

13217900 is a wasteful number, since it uses less digits than its factorization.

13217900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 13217900 is about 3635.6429967751. The cubic root of 13217900 is about 236.4399292000.

The spelling of 13217900 in words is "thirteen million, two hundred seventeen thousand, nine hundred".