135245772 has 18 divisors (see below), whose sum is σ = 341871348. Its totient is φ = 45081912.

The previous prime is 135245701. The next prime is 135245791. The reversal of 135245772 is 277542531.

135245772 is a `hidden beast` number, since 13 + 524 + 57 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3756827 = 135245772 / (1 + 3 + 5 + 2 + 4 + 5 + 7 + 7 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1878378 + ... + 1878449.

Almost surely, 2^135245772 is an apocalyptic number.

135245772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135245772 is an abundant number, since it is smaller than the sum of its proper divisors (206625576).

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

135245772 is a wasteful number, since it uses less digits than its factorization.

135245772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756837 (or 3756832 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 135245772 is about 11629.5215722746. The cubic root of 135245772 is about 513.3039021000.

The spelling of 135245772 in words is "one hundred thirty-five million, two hundred forty-five thousand, seven hundred seventy-two".