22002639 has 8 divisors (see below), whose sum is σ = 29818032. Its totient is φ = 14427840.

The previous prime is 22002613. The next prime is 22002647. The reversal of 22002639 is 93620022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22002639 - 2⁷ = 22002511 is a prime.

It is a super-2 number, since 2×22002639² = 968232245928642, which contains 22 as substring.

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 (22002649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59934 + ... + 60299.

It is an arithmetic number, because the mean of its divisors is an integer number (3727254).

Almost surely, 2^22002639 is an apocalyptic number.

22002639 is a deficient number, since it is larger than the sum of its proper divisors (7815393).

22002639 is a wasteful number, since it uses less digits than its factorization.

22002639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120297.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 22002639 is about 4690.6970697328. The cubic root of 22002639 is about 280.2151365294.

The spelling of 22002639 in words is "twenty-two million, two thousand, six hundred thirty-nine".