28469240 has 16 divisors (see below), whose sum is σ = 64055880. Its totient is φ = 11387680.

The previous prime is 28469227. The next prime is 28469257. The reversal of 28469240 is 4296482.

It is a self number, because there is not a number n which added to its sum of digits gives 28469240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355826 + ... + 355905.

Almost surely, 2^28469240 is an apocalyptic number.

28469240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28469240 is an abundant number, since it is smaller than the sum of its proper divisors (35586640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28469240 is a wasteful number, since it uses less digits than its factorization.

28469240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711742 (or 711738 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 28469240 is about 5335.6574102916. The cubic root of 28469240 is about 305.3458050414.

The spelling of 28469240 in words is "twenty-eight million, four hundred sixty-nine thousand, two hundred forty".