20617132 has 12 divisors (see below), whose sum is σ = 36411760. Its totient is φ = 10213776.

The previous prime is 20617127. The next prime is 20617133. The reversal of 20617132 is 23171602.

It is a super-2 number, since 2×20617132² = 850132263810848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20617133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23208 + ... + 24079.

Almost surely, 2^20617132 is an apocalyptic number.

It is an amenable number.

20617132 is a deficient number, since it is larger than the sum of its proper divisors (15794628).

20617132 is a wasteful number, since it uses less digits than its factorization.

20617132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47400 (or 47398 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20617132 is about 4540.6092102272. The cubic root of 20617132 is about 274.2054508971.

Adding to 20617132 its reverse (23171602), we get a palindrome (43788734).

The spelling of 20617132 in words is "twenty million, six hundred seventeen thousand, one hundred thirty-two".