20375229 has 16 divisors (see below), whose sum is σ = 31683200. Its totient is φ = 11642400.

The previous prime is 20375227. The next prime is 20375269. The reversal of 20375229 is 92257302.

It is a happy number.

It is not a de Polignac number, because 20375229 - 2¹ = 20375227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20375196 and 20375205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375221) 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, 8872 + ... + 10929.

It is an arithmetic number, because the mean of its divisors is an integer number (1980200).

Almost surely, 2^20375229 is an apocalyptic number.

It is an amenable number.

20375229 is a deficient number, since it is larger than the sum of its proper divisors (11307971).

20375229 is an equidigital number, since it uses as much as digits as its factorization.

20375229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19825 (or 19811 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20375229 is about 4513.8928875196. The cubic root of 20375229 is about 273.1288018120.

The spelling of 20375229 in words is "twenty million, three hundred seventy-five thousand, two hundred twenty-nine".