135233388 has 54 divisors (see below), whose sum is σ = 355453644. Its totient is φ = 44956944.

The previous prime is 135233387. The next prime is 135233389. The reversal of 135233388 is 883332531.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (135233387) and next prime (135233389).

It is a tau number, because it is divible by the number of its divisors (54).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (135233381) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 362370 + ... + 362742.

Almost surely, 2^135233388 is an apocalyptic number.

135233388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135233388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177726822).

135233388 is an abundant number, since it is smaller than the sum of its proper divisors (220220256).

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

135233388 is an frugal number, since it uses more digits than its factorization.

135233388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 378 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 135233388 is about 11628.9891220174. The cubic root of 135233388 is about 513.2882344518.

The spelling of 135233388 in words is "one hundred thirty-five million, two hundred thirty-three thousand, three hundred eighty-eight".