13220154 has 24 divisors (see below), whose sum is σ = 29038932. Its totient is φ = 4345920.

The previous prime is 13220131. The next prime is 13220177. The reversal of 13220154 is 45102231.

It is an interprime number because it is at equal distance from previous prime (13220131) and next prime (13220177).

It can be written as a sum of positive squares in 2 ways, for example, as 13155129 + 65025 = 3627^2 + 255^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3717 + ... + 6344.

Almost surely, 2^13220154 is an apocalyptic number.

13220154 is an abundant number, since it is smaller than the sum of its proper divisors (15818778).

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

13220154 is a wasteful number, since it uses less digits than its factorization.

13220154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10142 (or 10139 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13220154 is about 3635.9529699929. The cubic root of 13220154 is about 236.4533681807.

Adding to 13220154 its reverse (45102231), we get a palindrome (58322385).

The spelling of 13220154 in words is "thirteen million, two hundred twenty thousand, one hundred fifty-four".