28469315 has 32 divisors (see below), whose sum is σ = 42455040. Its totient is φ = 17884800.

The previous prime is 28469299. The next prime is 28469327. The reversal of 28469315 is 51396482.

It is a happy number.

It is not a de Polignac number, because 28469315 - 2⁴ = 28469299 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19925 + ... + 21305.

It is an arithmetic number, because the mean of its divisors is an integer number (1326720).

Almost surely, 2^28469315 is an apocalyptic number.

28469315 is a deficient number, since it is larger than the sum of its proper divisors (13985725).

28469315 is a wasteful number, since it uses less digits than its factorization.

28469315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its digits is 51840, while the sum is 38.

The square root of 28469315 is about 5335.6644384744. The cubic root of 28469315 is about 305.3460731777.

The spelling of 28469315 in words is "twenty-eight million, four hundred sixty-nine thousand, three hundred fifteen".