20995234 has 8 divisors (see below), whose sum is σ = 33915420. Its totient is φ = 9690096.

The previous prime is 20995231. The next prime is 20995237. The reversal of 20995234 is 43259902.

It is an interprime number because it is at equal distance from previous prime (20995231) and next prime (20995237).

It can be written as a sum of positive squares in 2 ways, for example, as 17181025 + 3814209 = 4145^2 + 1953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20995234.

It is not an unprimeable number, because it can be changed into a prime (20995231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403729 + ... + 403780.

Almost surely, 2^20995234 is an apocalyptic number.

20995234 is a deficient number, since it is larger than the sum of its proper divisors (12920186).

20995234 is a wasteful number, since it uses less digits than its factorization.

20995234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807524.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 20995234 is about 4582.0556522155. The cubic root of 20995234 is about 275.8715445786.

The spelling of 20995234 in words is "twenty million, nine hundred ninety-five thousand, two hundred thirty-four".