28358949 has 8 divisors (see below), whose sum is σ = 37852672. Its totient is φ = 18885600.

The previous prime is 28358947. The next prime is 28358951. The reversal of 28358949 is 94985382.

It is an interprime number because it is at equal distance from previous prime (28358947) and next prime (28358951).

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

It is not a de Polignac number, because 28358949 - 2¹ = 28358947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28358898 and 28358907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28358947) 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, 1477 + ... + 7674.

It is an arithmetic number, because the mean of its divisors is an integer number (4731584).

Almost surely, 2^28358949 is an apocalyptic number.

It is an amenable number.

28358949 is a deficient number, since it is larger than the sum of its proper divisors (9493723).

28358949 is a wasteful number, since it uses less digits than its factorization.

28358949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187.

The product of its digits is 622080, while the sum is 48.

The square root of 28358949 is about 5325.3121035297. The cubic root of 28358949 is about 304.9509873764.

The spelling of 28358949 in words is "twenty-eight million, three hundred fifty-eight thousand, nine hundred forty-nine".