28900998 has 24 divisors (see below), whose sum is σ = 71564688. Its totient is φ = 8257392.

The previous prime is 28900997. The next prime is 28901017. The reversal of 28900998 is 89900982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114561 + ... + 114812.

It is an arithmetic number, because the mean of its divisors is an integer number (2981862).

Almost surely, 2^28900998 is an apocalyptic number.

28900998 is an abundant number, since it is smaller than the sum of its proper divisors (42663690).

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

28900998 is a wasteful number, since it uses less digits than its factorization.

28900998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229388 (or 229385 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 28900998 is about 5375.9648436350. The cubic root of 28900998 is about 306.8816684367.

The spelling of 28900998 in words is "twenty-eight million, nine hundred thousand, nine hundred ninety-eight".