135224440 has 32 divisors (see below), whose sum is σ = 327660480. Its totient is φ = 49928832.

The previous prime is 135224431. The next prime is 135224461. The reversal of 135224440 is 44422531.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 129504 + ... + 130543.

It is an arithmetic number, because the mean of its divisors is an integer number (10239390).

Almost surely, 2^135224440 is an apocalyptic number.

135224440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135224440 is an abundant number, since it is smaller than the sum of its proper divisors (192436040).

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

135224440 is a wasteful number, since it uses less digits than its factorization.

135224440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260071 (or 260067 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 135224440 is about 11628.6043874577. The cubic root of 135224440 is about 513.2769132722.

Adding to 135224440 its reverse (44422531), we get a palindrome (179646971).

The spelling of 135224440 in words is "one hundred thirty-five million, two hundred twenty-four thousand, four hundred forty".