154043640 has 128 divisors (see below), whose sum is σ = 540576000. Its totient is φ = 38911104.

The previous prime is 154043629. The next prime is 154043677. The reversal of 154043640 is 46340451.

154043640 is a `hidden beast` number, since 15 + 4 + 0 + 4 + 3 + 640 = 666.

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

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 16767 + ... + 24273.

It is an arithmetic number, because the mean of its divisors is an integer number (4223250).

Almost surely, 2^154043640 is an apocalyptic number.

154043640 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 154043640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270288000).

154043640 is an abundant number, since it is smaller than the sum of its proper divisors (386532360).

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

154043640 is a wasteful number, since it uses less digits than its factorization.

154043640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7546 (or 7536 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 154043640 is about 12411.4318271503. The cubic root of 154043640 is about 536.0614672955.

It can be divided in two parts, 15404 and 3640, that added together give a square (19044 = 138²).

The spelling of 154043640 in words is "one hundred fifty-four million, forty-three thousand, six hundred forty".