20135394 has 24 divisors (see below), whose sum is σ = 43823052. Its totient is φ = 6681600.

The previous prime is 20135377. The next prime is 20135431. The reversal of 20135394 is 49353102.

It can be written as a sum of positive squares in 2 ways, for example, as 19847025 + 288369 = 4455^2 + 537^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1794 + ... + 6594.

Almost surely, 2^20135394 is an apocalyptic number.

20135394 is an abundant number, since it is smaller than the sum of its proper divisors (23687658).

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

20135394 is a wasteful number, since it uses less digits than its factorization.

20135394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042 (or 5039 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20135394 is about 4487.2479316392. The cubic root of 20135394 is about 272.0529110591.

Adding to 20135394 its reverse (49353102), we get a palindrome (69488496).

The spelling of 20135394 in words is "twenty million, one hundred thirty-five thousand, three hundred ninety-four".