28198494 has 12 divisors (see below), whose sum is σ = 61096776. Its totient is φ = 9399492.

The previous prime is 28198487. The next prime is 28198501. The reversal of 28198494 is 49489182.

It is an interprime number because it is at equal distance from previous prime (28198487) and next prime (28198501).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 783274 + ... + 783309.

It is an arithmetic number, because the mean of its divisors is an integer number (5091398).

Almost surely, 2^28198494 is an apocalyptic number.

28198494 is an abundant number, since it is smaller than the sum of its proper divisors (32898282).

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

28198494 is a wasteful number, since it uses less digits than its factorization.

28198494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566591 (or 1566588 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 28198494 is about 5310.2254189441. The cubic root of 28198494 is about 304.3747614428.

The spelling of 28198494 in words is "twenty-eight million, one hundred ninety-eight thousand, four hundred ninety-four".