135032400 has 120 divisors (see below), whose sum is σ = 480653760. Its totient is φ = 36005760.

The previous prime is 135032399. The next prime is 135032413. The reversal of 135032400 is 4230531.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4549 + ... + 17051.

It is an arithmetic number, because the mean of its divisors is an integer number (4005448).

Almost surely, 2^135032400 is an apocalyptic number.

135032400 is a gapful number since it is divisible by the number (10) 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 135032400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240326880).

135032400 is an abundant number, since it is smaller than the sum of its proper divisors (345621360).

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

135032400 is a wasteful number, since it uses less digits than its factorization.

135032400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12530 (or 12513 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 135032400 is about 11620.3442289805. The cubic root of 135032400 is about 513.0338201430.

Adding to 135032400 its reverse (4230531), we get a palindrome (139262931).

The spelling of 135032400 in words is "one hundred thirty-five million, thirty-two thousand, four hundred".