20143622 has 4 divisors (see below), whose sum is σ = 30215436. Its totient is φ = 10071810.

The previous prime is 20143621. The next prime is 20143631. The reversal of 20143622 is 22634102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22634102 = 2 ⋅11317051.

It is a junction number, because it is equal to n+sod(n) for n = 20143594 and 20143603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5035904 + ... + 5035907.

It is an arithmetic number, because the mean of its divisors is an integer number (7553859).

Almost surely, 2^20143622 is an apocalyptic number.

20143622 is a deficient number, since it is larger than the sum of its proper divisors (10071814).

20143622 is a wasteful number, since it uses less digits than its factorization.

20143622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10071813.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20143622 is about 4488.1646582985. The cubic root of 20143622 is about 272.0899626728.

Adding to 20143622 its reverse (22634102), we get a palindrome (42777724).

The spelling of 20143622 in words is "twenty million, one hundred forty-three thousand, six hundred twenty-two".