20270 has 8 divisors (see below), whose sum is σ = 36504. Its totient is φ = 8104.

The previous prime is 20269. The next prime is 20287. The reversal of 20270 is 7202.

It is a sphenic number, since it is the product of 3 distinct primes.

20270 is a modest number, since divided by 270 gives 20 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004 + ... + 1023.

It is an arithmetic number, because the mean of its divisors is an integer number (4563).

2²⁰²⁷⁰ is an apocalyptic number.

20270 is a deficient number, since it is larger than the sum of its proper divisors (16234).

20270 is a wasteful number, since it uses less digits than its factorization.

20270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 20270 is about 142.3727502017. The cubic root of 20270 is about 27.2657793749.

Adding to 20270 its reverse (7202), we get a palindrome (27472).

It can be divided in two parts, 202 and 70, that added together give a palindrome (272).

The spelling of 20270 in words is "twenty thousand, two hundred seventy", and thus it is an iban number.