20695235 has 24 divisors (see below), whose sum is σ = 27706560. Its totient is φ = 14826240.

The previous prime is 20695231. The next prime is 20695243. The reversal of 20695235 is 53259602.

It is not a de Polignac number, because 20695235 - 2² = 20695231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20695231) 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 23 ways as a sum of consecutive naturals, for example, 47579 + ... + 48011.

It is an arithmetic number, because the mean of its divisors is an integer number (1154440).

Almost surely, 2^20695235 is an apocalyptic number.

20695235 is a deficient number, since it is larger than the sum of its proper divisors (7011325).

20695235 is a wasteful number, since it uses less digits than its factorization.

20695235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 20695235 is about 4549.2015782992. The cubic root of 20695235 is about 274.5512681792.

The spelling of 20695235 in words is "twenty million, six hundred ninety-five thousand, two hundred thirty-five".