20883629 has 4 divisors (see below), whose sum is σ = 22490076. Its totient is φ = 19277184.

The previous prime is 20883619. The next prime is 20883631. The reversal of 20883629 is 92638802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7414729 + 13468900 = 2723^2 + 3670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20883629 is a prime.

It is a super-2 number, since 2×20883629² = 872251920419282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20883592 and 20883601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20883619) 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, 803204 + ... + 803229.

It is an arithmetic number, because the mean of its divisors is an integer number (5622519).

Almost surely, 2^20883629 is an apocalyptic number.

It is an amenable number.

20883629 is a deficient number, since it is larger than the sum of its proper divisors (1606447).

20883629 is a wasteful number, since it uses less digits than its factorization.

20883629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606446.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20883629 is about 4569.8609388033. The cubic root of 20883629 is about 275.3818562979.

It can be divided in two parts, 20883 and 629, that added together give a palindrome (21512).

The spelling of 20883629 in words is "twenty million, eight hundred eighty-three thousand, six hundred twenty-nine".