20302293 has 16 divisors (see below), whose sum is σ = 29736000. Its totient is φ = 12218880.

The previous prime is 20302283. The next prime is 20302297. The reversal of 20302293 is 39220302.

It is not a de Polignac number, because 20302293 - 2⁴ = 20302277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302297) 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, 2853 + ... + 6981.

It is an arithmetic number, because the mean of its divisors is an integer number (1858500).

Almost surely, 2^20302293 is an apocalyptic number.

It is an amenable number.

20302293 is a deficient number, since it is larger than the sum of its proper divisors (9433707).

20302293 is a wasteful number, since it uses less digits than its factorization.

20302293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20302293 is about 4505.8065870607. The cubic root of 20302293 is about 272.8025111710.

Adding to 20302293 its reverse (39220302), we get a palindrome (59522595).

The spelling of 20302293 in words is "twenty million, three hundred two thousand, two hundred ninety-three".