135902020 has 24 divisors (see below), whose sum is σ = 287578368. Its totient is φ = 53944800.

The previous prime is 135901981. The next prime is 135902027. The reversal of 135902020 is 20209531.

It is a junction number, because it is equal to n+sod(n) for n = 135901982 and 135902000.

It is not an unprimeable number, because it can be changed into a prime (135902027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23316 + ... + 28555.

It is an arithmetic number, because the mean of its divisors is an integer number (11982432).

Almost surely, 2^135902020 is an apocalyptic number.

135902020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135902020 is an abundant number, since it is smaller than the sum of its proper divisors (151676348).

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

135902020 is a wasteful number, since it uses less digits than its factorization.

135902020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52011 (or 52009 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 135902020 is about 11657.7021749571. The cubic root of 135902020 is about 514.1327913200.

The spelling of 135902020 in words is "one hundred thirty-five million, nine hundred two thousand, twenty".