154521432 has 240 divisors, whose sum is σ = 502203240. Its totient is φ = 44209152.

The previous prime is 154521421. The next prime is 154521439. The reversal of 154521432 is 234125451.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 154521396 and 154521405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154521439) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1861663 + ... + 1861745.

Almost surely, 2^154521432 is an apocalyptic number.

154521432 is a gapful number since it is divisible by the number (12) 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 154521432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251101620).

154521432 is an abundant number, since it is smaller than the sum of its proper divisors (347681808).

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

154521432 is a wasteful number, since it uses less digits than its factorization.

154521432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 118 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 154521432 is about 12430.6649862346. The cubic root of 154521432 is about 536.6151232384.

Adding to 154521432 its reverse (234125451), we get a palindrome (388646883).

The spelling of 154521432 in words is "one hundred fifty-four million, five hundred twenty-one thousand, four hundred thirty-two".