20392093 has 6 divisors (see below), whose sum is σ = 20587034. Its totient is φ = 20198976.

The previous prime is 20392063. The next prime is 20392103. The reversal of 20392093 is 39029302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3392964 + 16999129 = 1842^2 + 4123^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20392093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20392013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11971 + ... + 13567.

Almost surely, 2^20392093 is an apocalyptic number.

It is an amenable number.

20392093 is a deficient number, since it is larger than the sum of its proper divisors (194941).

20392093 is an equidigital number, since it uses as much as digits as its factorization.

20392093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 20392093 is about 4515.7605118075. The cubic root of 20392093 is about 273.2041346902.

The spelling of 20392093 in words is "twenty million, three hundred ninety-two thousand, ninety-three".