28499412 has 24 divisors (see below), whose sum is σ = 70410816. Its totient is φ = 8940928.

The previous prime is 28499407. The next prime is 28499417. The reversal of 28499412 is 21499482.

It is an interprime number because it is at equal distance from previous prime (28499407) and next prime (28499417).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28499417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69648 + ... + 70055.

It is an arithmetic number, because the mean of its divisors is an integer number (2933784).

Almost surely, 2^28499412 is an apocalyptic number.

It is an amenable number.

28499412 is an abundant number, since it is smaller than the sum of its proper divisors (41911404).

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

28499412 is a wasteful number, since it uses less digits than its factorization.

28499412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139727 (or 139725 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 28499412 is about 5338.4840544859. The cubic root of 28499412 is about 305.4536365220.

The spelling of 28499412 in words is "twenty-eight million, four hundred ninety-nine thousand, four hundred twelve".