16135424 has 18 divisors (see below), whose sum is σ = 32208330. Its totient is φ = 8067584.

The previous prime is 16135423. The next prime is 16135439. The reversal of 16135424 is 42453161.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 135424 = 4000^2 + 368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16135393 and 16135402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16135421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31259 + ... + 31770.

Almost surely, 2^16135424 is an apocalyptic number.

It is an amenable number.

16135424 is a deficient number, since it is larger than the sum of its proper divisors (16072906).

16135424 is an frugal number, since it uses more digits than its factorization.

16135424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63045 (or 63031 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 16135424 is about 4016.8923311436. The cubic root of 16135424 is about 252.6931450342.

Adding to 16135424 its reverse (42453161), we get a palindrome (58588585).

It can be divided in two parts, 16 and 135424, that multiplied together give a square (2166784 = 1472²).

The spelling of 16135424 in words is "sixteen million, one hundred thirty-five thousand, four hundred twenty-four".