22009735 has 32 divisors (see below), whose sum is σ = 30523392. Its totient is φ = 15079680.

The previous prime is 22009723. The next prime is 22009739. The reversal of 22009735 is 53790022.

It is not a de Polignac number, because 22009735 - 2¹⁵ = 21976967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22009739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160587 + ... + 160723.

It is an arithmetic number, because the mean of its divisors is an integer number (953856).

Almost surely, 2^22009735 is an apocalyptic number.

22009735 is a deficient number, since it is larger than the sum of its proper divisors (8513657).

22009735 is a wasteful number, since it uses less digits than its factorization.

22009735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 22009735 is about 4691.4533995341. The cubic root of 22009735 is about 280.2452570510.

Adding to 22009735 its reverse (53790022), we get a palindrome (75799757).

It can be divided in two parts, 2200 and 9735, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 22009735 in words is "twenty-two million, nine thousand, seven hundred thirty-five".