21436095 has 16 divisors (see below), whose sum is σ = 34685280. Its totient is φ = 11303424.

The previous prime is 21436091. The next prime is 21436117. The reversal of 21436095 is 59063412.

It is not a de Polignac number, because 21436095 - 2² = 21436091 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21436091) 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, 6694 + ... + 9363.

It is an arithmetic number, because the mean of its divisors is an integer number (2167830).

Almost surely, 2^21436095 is an apocalyptic number.

21436095 is a deficient number, since it is larger than the sum of its proper divisors (13249185).

21436095 is a wasteful number, since it uses less digits than its factorization.

21436095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16154.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 21436095 is about 4629.9130661385. The cubic root of 21436095 is about 277.7891151225.

The spelling of 21436095 in words is "twenty-one million, four hundred thirty-six thousand, ninety-five".