20672193 has 16 divisors (see below), whose sum is σ = 28993536. Its totient is φ = 13075920.

The previous prime is 20672131. The next prime is 20672227. The reversal of 20672193 is 39127602.

It is not a de Polignac number, because 20672193 - 2¹⁷ = 20541121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20672193.

It is not an unprimeable number, because it can be changed into a prime (20672123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7896 + ... + 10182.

It is an arithmetic number, because the mean of its divisors is an integer number (1812096).

Almost surely, 2^20672193 is an apocalyptic number.

20672193 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20672193 is a deficient number, since it is larger than the sum of its proper divisors (8321343).

20672193 is a wasteful number, since it uses less digits than its factorization.

20672193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20672193 is about 4546.6683406644. The cubic root of 20672193 is about 274.4493355421.

Adding to 20672193 its reverse (39127602), we get a palindrome (59799795).

The spelling of 20672193 in words is "twenty million, six hundred seventy-two thousand, one hundred ninety-three".