22887429 has 4 divisors (see below), whose sum is σ = 30516576. Its totient is φ = 15258284.

The previous prime is 22887421. The next prime is 22887433. The reversal of 22887429 is 92478822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22887429 - 2³ = 22887421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22887421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3814569 + ... + 3814574.

It is an arithmetic number, because the mean of its divisors is an integer number (7629144).

Almost surely, 2^22887429 is an apocalyptic number.

It is an amenable number.

22887429 is a deficient number, since it is larger than the sum of its proper divisors (7629147).

22887429 is an equidigital number, since it uses as much as digits as its factorization.

22887429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629146.

The product of its digits is 129024, while the sum is 42.

The square root of 22887429 is about 4784.0807894516. The cubic root of 22887429 is about 283.9219723816.

The spelling of 22887429 in words is "twenty-two million, eight hundred eighty-seven thousand, four hundred twenty-nine".