28493465 has 32 divisors (see below), whose sum is σ = 45916416. Its totient is φ = 16392960.

The previous prime is 28493461. The next prime is 28493467. The reversal of 28493465 is 56439482.

It is not a de Polignac number, because 28493465 - 2² = 28493461 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28493461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2159 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (1434888).

Almost surely, 2^28493465 is an apocalyptic number.

It is an amenable number.

28493465 is a deficient number, since it is larger than the sum of its proper divisors (17422951).

28493465 is a wasteful number, since it uses less digits than its factorization.

28493465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729.

The product of its digits is 207360, while the sum is 41.

The square root of 28493465 is about 5337.9270320978. The cubic root of 28493465 is about 305.4323886082.

The spelling of 28493465 in words is "twenty-eight million, four hundred ninety-three thousand, four hundred sixty-five".