154402240 has 28 divisors (see below), whose sum is σ = 367671096. Its totient is φ = 61760768.

The previous prime is 154402229. The next prime is 154402247. The reversal of 154402240 is 42204451.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154402247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240934 + ... + 241573.

Almost surely, 2^154402240 is an apocalyptic number.

154402240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154402240 is an abundant number, since it is smaller than the sum of its proper divisors (213268856).

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

154402240 is an equidigital number, since it uses as much as digits as its factorization.

154402240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482524 (or 482514 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 154402240 is about 12425.8697884695. The cubic root of 154402240 is about 536.4771128634.

Adding to 154402240 its reverse (42204451), we get a palindrome (196606691).

The spelling of 154402240 in words is "one hundred fifty-four million, four hundred two thousand, two hundred forty".