20379573 has 16 divisors (see below), whose sum is σ = 30373440. Its totient is φ = 13504752.

The previous prime is 20379559. The next prime is 20379577. The reversal of 20379573 is 37597302.

It is a happy number.

It is not a de Polignac number, because 20379573 - 2⁹ = 20379061 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2490 + ... + 6852.

It is an arithmetic number, because the mean of its divisors is an integer number (1898340).

Almost surely, 2^20379573 is an apocalyptic number.

It is an amenable number.

20379573 is a deficient number, since it is larger than the sum of its proper divisors (9993867).

20379573 is a wasteful number, since it uses less digits than its factorization.

20379573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 20379573 is about 4514.3740429876. The cubic root of 20379573 is about 273.1482107915.

The spelling of 20379573 in words is "twenty million, three hundred seventy-nine thousand, five hundred seventy-three".