135578972 has 12 divisors (see below), whose sum is σ = 238283136. Its totient is φ = 67498080.

The previous prime is 135578953. The next prime is 135578987. The reversal of 135578972 is 279875531.

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 3 ways as a sum of consecutive naturals, for example, 71804 + ... + 73667.

It is an arithmetic number, because the mean of its divisors is an integer number (19856928).

Almost surely, 2^135578972 is an apocalyptic number.

It is an amenable number.

135578972 is a deficient number, since it is larger than the sum of its proper divisors (102704164).

135578972 is a wasteful number, since it uses less digits than its factorization.

135578972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145708 (or 145706 counting only the distinct ones).

The product of its digits is 529200, while the sum is 47.

The square root of 135578972 is about 11643.8383705718. The cubic root of 135578972 is about 513.7250923372.

The spelling of 135578972 in words is "one hundred thirty-five million, five hundred seventy-eight thousand, nine hundred seventy-two".