13220350 has 72 divisors (see below), whose sum is σ = 29576232. Its totient is φ = 4334400.

The previous prime is 13220329. The next prime is 13220351. The reversal of 13220350 is 5302231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220351) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 307429 + ... + 307471.

It is an arithmetic number, because the mean of its divisors is an integer number (410781).

Almost surely, 2^13220350 is an apocalyptic number.

13220350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13220350 is an abundant number, since it is smaller than the sum of its proper divisors (16355882).

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

13220350 is a wasteful number, since it uses less digits than its factorization.

13220350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 13220350 is about 3635.9799229369. The cubic root of 13220350 is about 236.4545367155.

Adding to 13220350 its reverse (5302231), we get a palindrome (18522581).

The spelling of 13220350 in words is "thirteen million, two hundred twenty thousand, three hundred fifty".