28054998 has 80 divisors (see below), whose sum is σ = 68058144. Its totient is φ = 8605440.

The previous prime is 28054993. The next prime is 28055003. The reversal of 28054998 is 89945082.

It is an interprime number because it is at equal distance from previous prime (28054993) and next prime (28055003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28054993) 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 39 ways as a sum of consecutive naturals, for example, 167911 + ... + 168077.

Almost surely, 2^28054998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28054998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34029072).

28054998 is an abundant number, since it is smaller than the sum of its proper divisors (40003146).

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

28054998 is a wasteful number, since it uses less digits than its factorization.

28054998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 28054998 is about 5296.6968952357. The cubic root of 28054998 is about 303.8575842043.

It can be divided in two parts, 280 and 54998, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 28054998 in words is "twenty-eight million, fifty-four thousand, nine hundred ninety-eight".