154155240 has 96 divisors (see below), whose sum is σ = 502636680. Its totient is φ = 40974336.

The previous prime is 154155229. The next prime is 154155241. The reversal of 154155240 is 42551451.

154155240 is a `hidden beast` number, since 1 + 5 + 415 + 5 + 240 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 113934276 + 40220964 = 10674^2 + 6342^2 .

It is not an unprimeable number, because it can be changed into a prime (154155241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164052 + ... + 164988.

Almost surely, 2^154155240 is an apocalyptic number.

154155240 is a gapful number since it is divisible by the number (10) 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 154155240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251318340).

154155240 is an abundant number, since it is smaller than the sum of its proper divisors (348481440).

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

154155240 is a wasteful number, since it uses less digits than its factorization.

154155240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 154155240 is about 12415.9268683413. The cubic root of 154155240 is about 536.1908895349.

The spelling of 154155240 in words is "one hundred fifty-four million, one hundred fifty-five thousand, two hundred forty".