28698336 has 72 divisors (see below), whose sum is σ = 82142424. Its totient is φ = 9504000.

The previous prime is 28698289. The next prime is 28698361. The reversal of 28698336 is 63389682.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28698291 and 28698300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72090 + ... + 72486.

It is an arithmetic number, because the mean of its divisors is an integer number (1140867).

Almost surely, 2^28698336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28698336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41071212).

28698336 is an abundant number, since it is smaller than the sum of its proper divisors (53444088).

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

28698336 is a wasteful number, since it uses less digits than its factorization.

28698336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 653 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 28698336 is about 5357.0827882347. The cubic root of 28698336 is about 306.1626714212.

The spelling of 28698336 in words is "twenty-eight million, six hundred ninety-eight thousand, three hundred thirty-six".