154138432 has 56 divisors (see below), whose sum is σ = 353267264. Its totient is φ = 65359872.

The previous prime is 154138429. The next prime is 154138447. The reversal of 154138432 is 234831451.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 154138394 and 154138403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41683 + ... + 45229.

It is an arithmetic number, because the mean of its divisors is an integer number (6308344).

Almost surely, 2^154138432 is an apocalyptic number.

154138432 is the 6208-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154138432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176633632).

154138432 is an abundant number, since it is smaller than the sum of its proper divisors (199128832).

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

154138432 is an equidigital number, since it uses as much as digits as its factorization.

154138432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663 (or 3653 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 154138432 is about 12415.2499773464. The cubic root of 154138432 is about 536.1714013358.

Adding to 154138432 its reverse (234831451), we get a palindrome (388969883).

The spelling of 154138432 in words is "one hundred fifty-four million, one hundred thirty-eight thousand, four hundred thirty-two".