29222887 has 4 divisors (see below), whose sum is σ = 29238336. Its totient is φ = 29207440.

The previous prime is 29222839. The next prime is 29222911. The reversal of 29222887 is 78822292.

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 29222887 - 2¹¹ = 29220839 is a prime.

It is a super-2 number, since 2×29222887² = 1707954249229538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29225887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4414 + ... + 8827.

It is an arithmetic number, because the mean of its divisors is an integer number (7309584).

Almost surely, 2^29222887 is an apocalyptic number.

29222887 is the 4414-th pentagonal number.

29222887 is a deficient number, since it is larger than the sum of its proper divisors (15449).

29222887 is a wasteful number, since it uses less digits than its factorization.

29222887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15448.

The product of its digits is 64512, while the sum is 40.

The square root of 29222887 is about 5405.8197343234. The cubic root of 29222887 is about 308.0167774917.

The spelling of 29222887 in words is "twenty-nine million, two hundred twenty-two thousand, eight hundred eighty-seven".