154220 has 24 divisors (see below), whose sum is σ = 353808. Its totient is φ = 56000.

The previous prime is 154213. The next prime is 154229. The reversal of 154220 is 22451.

154220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 154195 and 154204.

It is not an unprimeable number, because it can be changed into a prime (154229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 570.

It is an arithmetic number, because the mean of its divisors is an integer number (14742).

2¹⁵⁴²²⁰ is an apocalyptic number.

154220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154220 is an abundant number, since it is smaller than the sum of its proper divisors (199588).

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

154220 is a wasteful number, since it uses less digits than its factorization.

154220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 154220 is about 392.7085433244. The cubic root of 154220 is about 53.6265962906.

Adding to 154220 its reverse (22451), we get a palindrome (176671).

Subtracting from 154220 its reverse (22451), we obtain a square (131769 = 363²).

The spelling of 154220 in words is "one hundred fifty-four thousand, two hundred twenty".