22039631 has 4 divisors (see below), whose sum is σ = 22253712. Its totient is φ = 21825552.

The previous prime is 22039621. The next prime is 22039643. The reversal of 22039631 is 13693022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22039631 - 2¹⁴ = 22023247 is a prime.

It is a super-2 number, since 2×22039631² = 971490669232322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22039631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22039621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106886 + ... + 107091.

It is an arithmetic number, because the mean of its divisors is an integer number (5563428).

Almost surely, 2^22039631 is an apocalyptic number.

22039631 is a deficient number, since it is larger than the sum of its proper divisors (214081).

22039631 is a wasteful number, since it uses less digits than its factorization.

22039631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214080.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 22039631 is about 4694.6385377364. The cubic root of 22039631 is about 280.3720861059.

The spelling of 22039631 in words is "twenty-two million, thirty-nine thousand, six hundred thirty-one".