135899248 has 40 divisors (see below), whose sum is σ = 278094800. Its totient is φ = 64157184.

The previous prime is 135899233. The next prime is 135899263. The reversal of 135899248 is 842998531.

It is an interprime number because it is at equal distance from previous prime (135899233) and next prime (135899263).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123790 + ... + 124882.

It is an arithmetic number, because the mean of its divisors is an integer number (6952370).

Almost surely, 2^135899248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135899248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139047400).

135899248 is an abundant number, since it is smaller than the sum of its proper divisors (142195552).

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

135899248 is a wasteful number, since it uses less digits than its factorization.

135899248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1523 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 135899248 is about 11657.5832829965. The cubic root of 135899248 is about 514.1292956992.

The spelling of 135899248 in words is "one hundred thirty-five million, eight hundred ninety-nine thousand, two hundred forty-eight".