135784020 has 24 divisors (see below), whose sum is σ = 380195424. Its totient is φ = 36209056.

The previous prime is 135783983. The next prime is 135784027. The reversal of 135784020 is 20487531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135784027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1131474 + ... + 1131593.

It is an arithmetic number, because the mean of its divisors is an integer number (15841476).

Almost surely, 2^135784020 is an apocalyptic number.

135784020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135784020 is an abundant number, since it is smaller than the sum of its proper divisors (244411404).

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

135784020 is a wasteful number, since it uses less digits than its factorization.

135784020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263079 (or 2263077 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 135784020 is about 11652.6400442132. The cubic root of 135784020 is about 513.9839457607.

The spelling of 135784020 in words is "one hundred thirty-five million, seven hundred eighty-four thousand, twenty".