20627534 has 4 divisors (see below), whose sum is σ = 30941304. Its totient is φ = 10313766.

The previous prime is 20627531. The next prime is 20627539. The reversal of 20627534 is 43572602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43572602 = 2 ⋅21786301.

It is a junction number, because it is equal to n+sod(n) for n = 20627497 and 20627506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20627531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5156882 + ... + 5156885.

It is an arithmetic number, because the mean of its divisors is an integer number (7735326).

Almost surely, 2^20627534 is an apocalyptic number.

20627534 is a deficient number, since it is larger than the sum of its proper divisors (10313770).

20627534 is a wasteful number, since it uses less digits than its factorization.

20627534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313769.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20627534 is about 4541.7545067958. The cubic root of 20627534 is about 274.2515582727.

The spelling of 20627534 in words is "twenty million, six hundred twenty-seven thousand, five hundred thirty-four".