20938292 has 6 divisors (see below), whose sum is σ = 36642018. Its totient is φ = 10469144.

The previous prime is 20938289. The next prime is 20938297. The reversal of 20938292 is 29283902.

It can be written as a sum of positive squares in only one way, i.e., 13734436 + 7203856 = 3706^2 + 2684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20938297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2617283 + ... + 2617290.

It is an arithmetic number, because the mean of its divisors is an integer number (6107003).

Almost surely, 2^20938292 is an apocalyptic number.

It is an amenable number.

20938292 is a deficient number, since it is larger than the sum of its proper divisors (15703726).

20938292 is a wasteful number, since it uses less digits than its factorization.

20938292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234577 (or 5234575 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20938292 is about 4575.8378467774. The cubic root of 20938292 is about 275.6219180792.

The spelling of 20938292 in words is "twenty million, nine hundred thirty-eight thousand, two hundred ninety-two".