20764193 has 16 divisors (see below), whose sum is σ = 22377600. Its totient is φ = 19223424.

The previous prime is 20764189. The next prime is 20764213. The reversal of 20764193 is 39146702.

It is a cyclic number.

It is not a de Polignac number, because 20764193 - 2² = 20764189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20764103) 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, 139283 + ... + 139431.

It is an arithmetic number, because the mean of its divisors is an integer number (1398600).

Almost surely, 2^20764193 is an apocalyptic number.

20764193 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20764193 is a deficient number, since it is larger than the sum of its proper divisors (1613407).

20764193 is a wasteful number, since it uses less digits than its factorization.

20764193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20764193 is about 4556.7744074071. The cubic root of 20764193 is about 274.8558715825.

The spelling of 20764193 in words is "twenty million, seven hundred sixty-four thousand, one hundred ninety-three".