28453998 has 16 divisors (see below), whose sum is σ = 56998656. Its totient is φ = 9469560.

The previous prime is 28453993. The next prime is 28454009. The reversal of 28453998 is 89935482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28453993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (3562416).

Almost surely, 2^28453998 is an apocalyptic number.

28453998 is an abundant number, since it is smaller than the sum of its proper divisors (28544658).

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

28453998 is a wasteful number, since it uses less digits than its factorization.

28453998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559.

The product of its digits is 622080, while the sum is 48.

The square root of 28453998 is about 5334.2289039748. The cubic root of 28453998 is about 305.2913028069.

The spelling of 28453998 in words is "twenty-eight million, four hundred fifty-three thousand, nine hundred ninety-eight".