28727514 has 48 divisors (see below), whose sum is σ = 66405120. Its totient is φ = 9196200.

The previous prime is 28727459. The next prime is 28727519. The reversal of 28727514 is 41572782.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28727519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219229 + ... + 219359.

It is an arithmetic number, because the mean of its divisors is an integer number (1383440).

Almost surely, 2^28727514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28727514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33202560).

28727514 is an abundant number, since it is smaller than the sum of its proper divisors (37677606).

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

28727514 is a wasteful number, since it uses less digits than its factorization.

28727514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 167 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28727514 is about 5359.8054069154. The cubic root of 28727514 is about 306.2663962345.

It can be divided in two parts, 28727 and 514, that added together give a square (29241 = 171²).

The spelling of 28727514 in words is "twenty-eight million, seven hundred twenty-seven thousand, five hundred fourteen".