154022240 has 96 divisors (see below), whose sum is σ = 380642976. Its totient is φ = 58839040.

The previous prime is 154022233. The next prime is 154022251. The reversal of 154022240 is 42220451.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 347459 + ... + 347901.

It is an arithmetic number, because the mean of its divisors is an integer number (3965031).

Almost surely, 2^154022240 is an apocalyptic number.

154022240 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 154022240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190321488).

154022240 is an abundant number, since it is smaller than the sum of its proper divisors (226620736).

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

154022240 is a wasteful number, since it uses less digits than its factorization.

154022240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 154022240 is about 12410.5696887774. The cubic root of 154022240 is about 536.0366426275.

Adding to 154022240 its reverse (42220451), we get a palindrome (196242691).

The spelling of 154022240 in words is "one hundred fifty-four million, twenty-two thousand, two hundred forty".