28111480 has 16 divisors (see below), whose sum is σ = 63250920. Its totient is φ = 11244576.

The previous prime is 28111463. The next prime is 28111487. The reversal of 28111480 is 8411182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28111487) 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, 351354 + ... + 351433.

Almost surely, 2^28111480 is an apocalyptic number.

28111480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28111480 is an abundant number, since it is smaller than the sum of its proper divisors (35139440).

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

28111480 is a wasteful number, since it uses less digits than its factorization.

28111480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702798 (or 702794 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 28111480 is about 5302.0260278501. The cubic root of 28111480 is about 304.0613622670.

The spelling of 28111480 in words is "twenty-eight million, one hundred eleven thousand, four hundred eighty".