28027460 has 48 divisors (see below), whose sum is σ = 60718896. Its totient is φ = 10862592.

The previous prime is 28027459. The next prime is 28027469. The reversal of 28027460 is 6472082.

It can be written as a sum of positive squares in 8 ways, for example, as 64516 + 27962944 = 254^2 + 5288^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145124 + ... + 145316.

It is an arithmetic number, because the mean of its divisors is an integer number (1264977).

Almost surely, 2^28027460 is an apocalyptic number.

28027460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28027460 is an abundant number, since it is smaller than the sum of its proper divisors (32691436).

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

28027460 is a wasteful number, since it uses less digits than its factorization.

28027460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28027460 is about 5294.0967123769. The cubic root of 28027460 is about 303.7581322937.

The spelling of 28027460 in words is "twenty-eight million, twenty-seven thousand, four hundred sixty".