20502293 has 16 divisors (see below), whose sum is σ = 24205824. Its totient is φ = 17001600.

The previous prime is 20502281. The next prime is 20502299. The reversal of 20502293 is 39220502.

It is not a de Polignac number, because 20502293 - 2¹⁴ = 20485909 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 (20502299) 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 15 ways as a sum of consecutive naturals, for example, 32921 + ... + 33537.

It is an arithmetic number, because the mean of its divisors is an integer number (1512864).

Almost surely, 2^20502293 is an apocalyptic number.

It is an amenable number.

20502293 is a deficient number, since it is larger than the sum of its proper divisors (3703531).

20502293 is a wasteful number, since it uses less digits than its factorization.

20502293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20502293 is about 4527.9457814775. The cubic root of 20502293 is about 273.6953875892.

Adding to 20502293 its reverse (39220502), we get a palindrome (59722795).

The spelling of 20502293 in words is "twenty million, five hundred two thousand, two hundred ninety-three".