28330469 has 8 divisors (see below), whose sum is σ = 28651392. Its totient is φ = 28011600.

The previous prime is 28330447. The next prime is 28330529. The reversal of 28330469 is 96403382.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28330469 is a prime.

It is a super-2 number, since 2×28330469² = 1605230947519922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28330409) 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, 56072 + ... + 56574.

It is an arithmetic number, because the mean of its divisors is an integer number (3581424).

Almost surely, 2^28330469 is an apocalyptic number.

It is an amenable number.

28330469 is a deficient number, since it is larger than the sum of its proper divisors (320923).

28330469 is a wasteful number, since it uses less digits than its factorization.

28330469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 28330469 is about 5322.6374101567. The cubic root of 28330469 is about 304.8488689575.

The spelling of 28330469 in words is "twenty-eight million, three hundred thirty thousand, four hundred sixty-nine".