20257627 has 4 divisors (see below), whose sum is σ = 21815920. Its totient is φ = 18699336.

The previous prime is 20257621. The next prime is 20257669. The reversal of 20257627 is 72675202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72675202 = 2 ⋅36337601.

It is a cyclic number.

It is not a de Polignac number, because 20257627 - 2³ = 20257619 is a prime.

It is a super-2 number, since 2×20257627² = 820742903342258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20257621) 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, 779127 + ... + 779152.

It is an arithmetic number, because the mean of its divisors is an integer number (5453980).

Almost surely, 2^20257627 is an apocalyptic number.

20257627 is a deficient number, since it is larger than the sum of its proper divisors (1558293).

20257627 is a wasteful number, since it uses less digits than its factorization.

20257627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558292.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 20257627 is about 4500.8473646637. The cubic root of 20257627 is about 272.6023048239.

The spelling of 20257627 in words is "twenty million, two hundred fifty-seven thousand, six hundred twenty-seven".