22072587 has 4 divisors (see below), whose sum is σ = 29430120. Its totient is φ = 14715056.

The previous prime is 22072573. The next prime is 22072597. The reversal of 22072587 is 78527022.

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 22072587 - 2⁸ = 22072331 is a prime.

It is a super-3 number, since 3×22072587³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22072517) 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, 3678762 + ... + 3678767.

It is an arithmetic number, because the mean of its divisors is an integer number (7357530).

Almost surely, 2^22072587 is an apocalyptic number.

22072587 is a deficient number, since it is larger than the sum of its proper divisors (7357533).

22072587 is an equidigital number, since it uses as much as digits as its factorization.

22072587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357532.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 22072587 is about 4698.1471879880. The cubic root of 22072587 is about 280.5117638948.

The spelling of 22072587 in words is "twenty-two million, seventy-two thousand, five hundred eighty-seven".