28343469 has 32 divisors (see below), whose sum is σ = 48752640. Its totient is φ = 14212800.

The previous prime is 28343461. The next prime is 28343489. The reversal of 28343469 is 96434382.

It is not a de Polignac number, because 28343469 - 2³ = 28343461 is a prime.

It is a super-2 number, since 2×28343469² = 1606704469907922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4584 + ... + 8814.

It is an arithmetic number, because the mean of its divisors is an integer number (1523520).

Almost surely, 2^28343469 is an apocalyptic number.

28343469 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28343469 is a deficient number, since it is larger than the sum of its proper divisors (20409171).

28343469 is a wasteful number, since it uses less digits than its factorization.

28343469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281.

The product of its digits is 124416, while the sum is 39.

The square root of 28343469 is about 5323.8584691932. The cubic root of 28343469 is about 304.8954904857.

The spelling of 28343469 in words is "twenty-eight million, three hundred forty-three thousand, four hundred sixty-nine".