20947053 has 8 divisors (see below), whose sum is σ = 28217728. Its totient is φ = 13820544.

The previous prime is 20947033. The next prime is 20947061. The reversal of 20947053 is 35074902.

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

It is not a de Polignac number, because 20947053 - 2⁵ = 20947021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20947053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20947033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35701 + ... + 36282.

It is an arithmetic number, because the mean of its divisors is an integer number (3527216).

Almost surely, 2^20947053 is an apocalyptic number.

It is an amenable number.

20947053 is a deficient number, since it is larger than the sum of its proper divisors (7270675).

20947053 is an equidigital number, since it uses as much as digits as its factorization.

20947053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72083.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20947053 is about 4576.7950576796. The cubic root of 20947053 is about 275.6603546259.

The spelling of 20947053 in words is "twenty million, nine hundred forty-seven thousand, fifty-three".