28229357 has 8 divisors (see below), whose sum is σ = 30444960. Its totient is φ = 26020080.

The previous prime is 28229351. The next prime is 28229363. The reversal of 28229357 is 75392282.

It is an interprime number because it is at equal distance from previous prime (28229351) and next prime (28229363).

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 28229357 - 2⁶ = 28229293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28229357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28229351) 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, 12182 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (3805620).

Almost surely, 2^28229357 is an apocalyptic number.

It is an amenable number.

28229357 is a deficient number, since it is larger than the sum of its proper divisors (2215603).

28229357 is a wasteful number, since it uses less digits than its factorization.

28229357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163.

The product of its digits is 60480, while the sum is 38.

The square root of 28229357 is about 5313.1306213945. The cubic root of 28229357 is about 304.4857661080.

The spelling of 28229357 in words is "twenty-eight million, two hundred twenty-nine thousand, three hundred fifty-seven".