20261627 has 4 divisors (see below), whose sum is σ = 20451096. Its totient is φ = 20072160.

The previous prime is 20261621. The next prime is 20261629. The reversal of 20261627 is 72616202.

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

It is a cyclic number.

It is not a de Polignac number, because 20261627 - 2¹⁶ = 20196091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20261596 and 20261605.

It is not an unprimeable number, because it can be changed into a prime (20261621) 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, 94574 + ... + 94787.

It is an arithmetic number, because the mean of its divisors is an integer number (5112774).

Almost surely, 2^20261627 is an apocalyptic number.

20261627 is a deficient number, since it is larger than the sum of its proper divisors (189469).

20261627 is a wasteful number, since it uses less digits than its factorization.

20261627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189468.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20261627 is about 4501.2917035002. The cubic root of 20261627 is about 272.6202460082.

Adding to 20261627 its reverse (72616202), we get a palindrome (92877829).

The spelling of 20261627 in words is "twenty million, two hundred sixty-one thousand, six hundred twenty-seven".