154420220 has 48 divisors (see below), whose sum is σ = 342921600. Its totient is φ = 58248000.

The previous prime is 154420177. The next prime is 154420237. The reversal of 154420220 is 22024451.

It is a happy number.

154420220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×154420220³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 154420192 and 154420201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94571 + ... + 96189.

It is an arithmetic number, because the mean of its divisors is an integer number (7144200).

Almost surely, 2^154420220 is an apocalyptic number.

154420220 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 154420220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171460800).

154420220 is an abundant number, since it is smaller than the sum of its proper divisors (188501380).

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

154420220 is a wasteful number, since it uses less digits than its factorization.

154420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 154420220 is about 12426.5932580092. The cubic root of 154420220 is about 536.4979361453.

Adding to 154420220 its reverse (22024451), we get a palindrome (176444671).

The spelling of 154420220 in words is "one hundred fifty-four million, four hundred twenty thousand, two hundred twenty".