135022720 has 64 divisors (see below), whose sum is σ = 368913600. Its totient is φ = 46291968.

The previous prime is 135022711. The next prime is 135022729. The reversal of 135022720 is 27220531.

It is an interprime number because it is at equal distance from previous prime (135022711) and next prime (135022729).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×135022720² = 36462269832396800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135022691 and 135022700.

It is not an unprimeable number, because it can be changed into a prime (135022729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10590 + ... + 19549.

It is an arithmetic number, because the mean of its divisors is an integer number (5764275).

Almost surely, 2^135022720 is an apocalyptic number.

135022720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135022720 is an abundant number, since it is smaller than the sum of its proper divisors (233890880).

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

135022720 is an equidigital number, since it uses as much as digits as its factorization.

135022720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30165 (or 30153 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 135022720 is about 11619.9277106185. The cubic root of 135022720 is about 513.0215606506.

The spelling of 135022720 in words is "one hundred thirty-five million, twenty-two thousand, seven hundred twenty".