28098371 has 4 divisors (see below), whose sum is σ = 32112432. Its totient is φ = 24084312.

The previous prime is 28098353. The next prime is 28098377. The reversal of 28098371 is 17389082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17389082 = 2 ⋅8694541.

It is not a de Polignac number, because 28098371 - 2¹⁰ = 28097347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28098377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2007020 + ... + 2007033.

It is an arithmetic number, because the mean of its divisors is an integer number (8028108).

Almost surely, 2^28098371 is an apocalyptic number.

28098371 is a deficient number, since it is larger than the sum of its proper divisors (4014061).

28098371 is an equidigital number, since it uses as much as digits as its factorization.

28098371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014060.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 28098371 is about 5300.7896581547. The cubic root of 28098371 is about 304.0140914232.

The spelling of 28098371 in words is "twenty-eight million, ninety-eight thousand, three hundred seventy-one".