135972782 has 36 divisors (see below), whose sum is σ = 229431384. Its totient is φ = 60390000.

The previous prime is 135972779. The next prime is 135972799. The reversal of 135972782 is 287279531.

135972782 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 900407 + ... + 900557.

It is an arithmetic number, because the mean of its divisors is an integer number (6373094).

Almost surely, 2^135972782 is an apocalyptic number.

135972782 is a deficient number, since it is larger than the sum of its proper divisors (93458602).

135972782 is a wasteful number, since it uses less digits than its factorization.

135972782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 225 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 135972782 is about 11660.7367691754. The cubic root of 135972782 is about 514.2220094005. Note that the first 3 decimals are identical.

It can be divided in two parts, 13 and 5972782, that added together give a palindrome (5972795).

The spelling of 135972782 in words is "one hundred thirty-five million, nine hundred seventy-two thousand, seven hundred eighty-two".