135447928 has 128 divisors (see below), whose sum is σ = 336752640. Its totient is φ = 49536000.

The previous prime is 135447899. The next prime is 135447931. The reversal of 135447928 is 829744531.

It is a super-2 number, since 2×135447928² = 36692282398986368, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 782850 + ... + 783022.

It is an arithmetic number, because the mean of its divisors is an integer number (2630880).

Almost surely, 2^135447928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135447928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168376320).

135447928 is an abundant number, since it is smaller than the sum of its proper divisors (201304712).

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

135447928 is a wasteful number, since it uses less digits than its factorization.

135447928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 265 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 135447928 is about 11638.2098279761. The cubic root of 135447928 is about 513.5595251373.

The spelling of 135447928 in words is "one hundred thirty-five million, four hundred forty-seven thousand, nine hundred twenty-eight".