135901720 has 32 divisors (see below), whose sum is σ = 306194400. Its totient is φ = 54286848.

The previous prime is 135901709. The next prime is 135901729. The reversal of 135901720 is 27109531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135901729) 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, 34912 + ... + 38608.

It is an arithmetic number, because the mean of its divisors is an integer number (9568575).

Almost surely, 2^135901720 is an apocalyptic number.

135901720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135901720 is an abundant number, since it is smaller than the sum of its proper divisors (170292680).

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

135901720 is a wasteful number, since it uses less digits than its factorization.

135901720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627 (or 4623 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 135901720 is about 11657.6893079203. The cubic root of 135901720 is about 514.1324130084.

The spelling of 135901720 in words is "one hundred thirty-five million, nine hundred one thousand, seven hundred twenty".