28049100 has 36 divisors (see below), whose sum is σ = 81156264. Its totient is φ = 7479680.

The previous prime is 28049069. The next prime is 28049107. The reversal of 28049100 is 194082.

It is not an unprimeable number, because it can be changed into a prime (28049107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46449 + ... + 47048.

Almost surely, 2^28049100 is an apocalyptic number.

28049100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28049100 is an abundant number, since it is smaller than the sum of its proper divisors (53107164).

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

28049100 is a wasteful number, since it uses less digits than its factorization.

28049100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93514 (or 93507 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 28049100 is about 5296.1401038870. The cubic root of 28049100 is about 303.8362893933.

The spelling of 28049100 in words is "twenty-eight million, forty-nine thousand, one hundred".