28899801 has 16 divisors (see below), whose sum is σ = 48931200. Its totient is φ = 16514064.

The previous prime is 28899791. The next prime is 28899833. The reversal of 28899801 is 10899882.

It is not a de Polignac number, because 28899801 - 2⁹ = 28899289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28899841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76266 + ... + 76643.

It is an arithmetic number, because the mean of its divisors is an integer number (3058200).

Almost surely, 2^28899801 is an apocalyptic number.

28899801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28899801 is a deficient number, since it is larger than the sum of its proper divisors (20031399).

28899801 is a wasteful number, since it uses less digits than its factorization.

28899801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152925 (or 152919 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 28899801 is about 5375.8535136293. The cubic root of 28899801 is about 306.8774316462.

The spelling of 28899801 in words is "twenty-eight million, eight hundred ninety-nine thousand, eight hundred one".