20132646 has 16 divisors (see below), whose sum is σ = 40751424. Its totient is φ = 6629864.

The previous prime is 20132639. The next prime is 20132683. The reversal of 20132646 is 64623102.

It is a super-2 number, since 2×20132646² = 810646869922632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19716 + ... + 20711.

It is an arithmetic number, because the mean of its divisors is an integer number (2546964).

Almost surely, 2^20132646 is an apocalyptic number.

20132646 is an abundant number, since it is smaller than the sum of its proper divisors (20618778).

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

20132646 is a wasteful number, since it uses less digits than its factorization.

20132646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40515.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20132646 is about 4486.9417201475. The cubic root of 20132646 is about 272.0405342562.

Adding to 20132646 its reverse (64623102), we get a palindrome (84755748).

The spelling of 20132646 in words is "twenty million, one hundred thirty-two thousand, six hundred forty-six".