22991029 has 8 divisors (see below), whose sum is σ = 23496480. Its totient is φ = 22488336.

The previous prime is 22991011. The next prime is 22991041. The reversal of 22991029 is 92019922.

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

It is a cyclic number.

It is not a de Polignac number, because 22991029 - 2²¹ = 20893877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22990985 and 22991003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22991009) 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, 30742 + ... + 31480.

It is an arithmetic number, because the mean of its divisors is an integer number (2937060).

Almost surely, 2^22991029 is an apocalyptic number.

It is an amenable number.

22991029 is a deficient number, since it is larger than the sum of its proper divisors (505451).

22991029 is an equidigital number, since it uses as much as digits as its factorization.

22991029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 22991029 is about 4794.8961406896. The cubic root of 22991029 is about 284.3497187846.

The spelling of 22991029 in words is "twenty-two million, nine hundred ninety-one thousand, twenty-nine".