28769469 has 8 divisors (see below), whose sum is σ = 38454720. Its totient is φ = 19131936.

The previous prime is 28769467. The next prime is 28769473. The reversal of 28769469 is 96496782.

It is a happy number.

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

It is not a de Polignac number, because 28769469 - 2¹ = 28769467 is a prime.

It is a super-2 number, since 2×28769469² = 1655364693083922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28769467) 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, 10497 + ... + 12950.

It is an arithmetic number, because the mean of its divisors is an integer number (4806840).

Almost surely, 2^28769469 is an apocalyptic number.

It is an amenable number.

28769469 is a deficient number, since it is larger than the sum of its proper divisors (9685251).

28769469 is a wasteful number, since it uses less digits than its factorization.

28769469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23859.

The product of its digits is 1306368, while the sum is 51.

The square root of 28769469 is about 5363.7178337418. The cubic root of 28769469 is about 306.4154189499.

The spelling of 28769469 in words is "twenty-eight million, seven hundred sixty-nine thousand, four hundred sixty-nine".