154734138 has 96 divisors (see below), whose sum is σ = 394430400. Its totient is φ = 45069696.

The previous prime is 154734127. The next prime is 154734163. The reversal of 154734138 is 831437451.

It is a happy number.

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 119398 + ... + 120686.

It is an arithmetic number, because the mean of its divisors is an integer number (4108650).

Almost surely, 2^154734138 is an apocalyptic number.

154734138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 154734138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197215200).

154734138 is an abundant number, since it is smaller than the sum of its proper divisors (239696262).

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

154734138 is a wasteful number, since it uses less digits than its factorization.

154734138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1326 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 154734138 is about 12439.2177406781. The cubic root of 154734138 is about 536.8612356414.

The spelling of 154734138 in words is "one hundred fifty-four million, seven hundred thirty-four thousand, one hundred thirty-eight".