154421344 has 96 divisors (see below), whose sum is σ = 387072000. Its totient is φ = 60117120.

The previous prime is 154421339. The next prime is 154421347. The reversal of 154421344 is 443124451.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154421347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120097 + ... + 121375.

It is an arithmetic number, because the mean of its divisors is an integer number (4032000).

Almost surely, 2^154421344 is an apocalyptic number.

154421344 is a gapful number since it is divisible by the number (14) 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 154421344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193536000).

154421344 is an abundant number, since it is smaller than the sum of its proper divisors (232650656).

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

154421344 is a wasteful number, since it uses less digits than its factorization.

154421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1299 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 154421344 is about 12426.6384835160. The cubic root of 154421344 is about 536.4992378362.

Adding to 154421344 its reverse (443124451), we get a palindrome (597545795).

The spelling of 154421344 in words is "one hundred fifty-four million, four hundred twenty-one thousand, three hundred forty-four".