135723278 has 8 divisors (see below), whose sum is σ = 203639400. Its totient is φ = 67843480.

The previous prime is 135723241. The next prime is 135723293. The reversal of 135723278 is 872327531.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 4073 + ... + 16971.

It is an arithmetic number, because the mean of its divisors is an integer number (25454925).

Almost surely, 2^135723278 is an apocalyptic number.

135723278 is a deficient number, since it is larger than the sum of its proper divisors (67916122).

135723278 is a wasteful number, since it uses less digits than its factorization.

135723278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18162.

The product of its digits is 70560, while the sum is 38.

The square root of 135723278 is about 11650.0333905101. The cubic root of 135723278 is about 513.9072919949.

The spelling of 135723278 in words is "one hundred thirty-five million, seven hundred twenty-three thousand, two hundred seventy-eight".