20530774 has 8 divisors (see below), whose sum is σ = 33595848. Its totient is φ = 9332160.

The previous prime is 20530771. The next prime is 20530793. The reversal of 20530774 is 47703502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530771) 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, 466587 + ... + 466630.

It is an arithmetic number, because the mean of its divisors is an integer number (4199481).

Almost surely, 2^20530774 is an apocalyptic number.

20530774 is a deficient number, since it is larger than the sum of its proper divisors (13065074).

20530774 is a wasteful number, since it uses less digits than its factorization.

20530774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933230.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 20530774 is about 4531.0897144065. The cubic root of 20530774 is about 273.8220646647.

The spelling of 20530774 in words is "twenty million, five hundred thirty thousand, seven hundred seventy-four".