154445020 has 12 divisors (see below), whose sum is σ = 324334584. Its totient is φ = 61778000.

The previous prime is 154445009. The next prime is 154445041. The reversal of 154445020 is 20544451.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3861106 + ... + 3861145.

It is an arithmetic number, because the mean of its divisors is an integer number (27027882).

Almost surely, 2^154445020 is an apocalyptic number.

154445020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154445020 is an abundant number, since it is smaller than the sum of its proper divisors (169889564).

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

154445020 is a wasteful number, since it uses less digits than its factorization.

154445020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7722260 (or 7722258 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 154445020 is about 12427.5910779201. The cubic root of 154445020 is about 536.5266552612.

Adding to 154445020 its reverse (20544451), we get a palindrome (174989471).

It can be divided in two parts, 1544 and 45020, that added together give a palindrome (46564).

The spelling of 154445020 in words is "one hundred fifty-four million, four hundred forty-five thousand, twenty".