28573398 has 96 divisors (see below), whose sum is σ = 75688704. Its totient is φ = 7908192.

The previous prime is 28573393. The next prime is 28573403. The reversal of 28573398 is 89337582.

It is an interprime number because it is at equal distance from previous prime (28573393) and next prime (28573403).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (362880) is a multiple of the sum of its prime factors (288).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125761 + ... + 125987.

It is an arithmetic number, because the mean of its divisors is an integer number (788424).

Almost surely, 2^28573398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28573398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37844352).

28573398 is an abundant number, since it is smaller than the sum of its proper divisors (47115306).

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

28573398 is a wasteful number, since it uses less digits than its factorization.

28573398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 276 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 28573398 is about 5345.4090582480. The cubic root of 28573398 is about 305.7177327845.

The spelling of 28573398 in words is "twenty-eight million, five hundred seventy-three thousand, three hundred ninety-eight".