28871496 has 48 divisors (see below), whose sum is σ = 78574860. Its totient is φ = 9576960.

The previous prime is 28871471. The next prime is 28871497. The reversal of 28871496 is 69417882.

It can be written as a sum of positive squares in 2 ways, for example, as 28836900 + 34596 = 5370^2 + 186^2 .

It is not an unprimeable number, because it can be changed into a prime (28871497) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15916 + ... + 17636.

Almost surely, 2^28871496 is an apocalyptic number.

It is an amenable number.

28871496 is an abundant number, since it is smaller than the sum of its proper divisors (49703364).

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

28871496 is a wasteful number, since it uses less digits than its factorization.

28871496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1959 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 28871496 is about 5373.2202634919. The cubic root of 28871496 is about 306.7772117745. Note that the first 3 decimals are identical.

The spelling of 28871496 in words is "twenty-eight million, eight hundred seventy-one thousand, four hundred ninety-six".