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135428 = 2233857
BaseRepresentation
bin100001000100000100
320212202212
4201010010
513313203
62522552
71102556
oct410404
9225685
10135428
1192827
1266458
1349847
14374d6
152a1d8
hex21104

135428 has 6 divisors (see below), whose sum is σ = 237006. Its totient is φ = 67712.

The previous prime is 135427. The next prime is 135431. The reversal of 135428 is 824531.

It can be written as a sum of positive squares in only one way, i.e., 135424 + 4 = 368^2 + 2^2 .

It is not an unprimeable number, because it can be changed into a prime (135427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16925 + ... + 16932.

It is an arithmetic number, because the mean of its divisors is an integer number (39501).

2135428 is an apocalyptic number.

It is an amenable number.

135428 is a deficient number, since it is larger than the sum of its proper divisors (101578).

135428 is a wasteful number, since it uses less digits than its factorization.

135428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33861 (or 33859 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 135428 is about 368.0054347425. The cubic root of 135428 is about 51.3534337804.

Adding to 135428 its reverse (824531), we get a palindrome (959959).

The spelling of 135428 in words is "one hundred thirty-five thousand, four hundred twenty-eight".

Divisors: 1 2 4 33857 67714 135428