154221324 has 12 divisors (see below), whose sum is σ = 359849784. Its totient is φ = 51407104.

The previous prime is 154221323. The next prime is 154221329. The reversal of 154221324 is 423122451.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 154221294 and 154221303.

It is not an unprimeable number, because it can be changed into a prime (154221323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6425877 + ... + 6425900.

It is an arithmetic number, because the mean of its divisors is an integer number (29987482).

Almost surely, 2^154221324 is an apocalyptic number.

It is an amenable number.

154221324 is an abundant number, since it is smaller than the sum of its proper divisors (205628460).

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

154221324 is a wasteful number, since it uses less digits than its factorization.

154221324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851784 (or 12851782 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 154221324 is about 12418.5878424240. The cubic root of 154221324 is about 536.2674975409.

Adding to 154221324 its reverse (423122451), we get a palindrome (577343775).

The spelling of 154221324 in words is "one hundred fifty-four million, two hundred twenty-one thousand, three hundred twenty-four".