22071639 has 16 divisors (see below), whose sum is σ = 30741120. Its totient is φ = 14068320.

The previous prime is 22071619. The next prime is 22071649. The reversal of 22071639 is 93617022.

It is not a de Polignac number, because 22071639 - 2⁵ = 22071607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22071619) 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, 8124 + ... + 10494.

It is an arithmetic number, because the mean of its divisors is an integer number (1921320).

Almost surely, 2^22071639 is an apocalyptic number.

22071639 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

22071639 is a deficient number, since it is larger than the sum of its proper divisors (8669481).

22071639 is a wasteful number, since it uses less digits than its factorization.

22071639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 22071639 is about 4698.0462960682. The cubic root of 22071639 is about 280.5077479185.

The spelling of 22071639 in words is "twenty-two million, seventy-one thousand, six hundred thirty-nine".