28518460 has 24 divisors (see below), whose sum is σ = 61283376. Its totient is φ = 11141760.

The previous prime is 28518443. The next prime is 28518463. The reversal of 28518460 is 6481582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28518463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15721 + ... + 17440.

It is an arithmetic number, because the mean of its divisors is an integer number (2553474).

Almost surely, 2^28518460 is an apocalyptic number.

28518460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28518460 is an abundant number, since it is smaller than the sum of its proper divisors (32764916).

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

28518460 is a wasteful number, since it uses less digits than its factorization.

28518460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33213 (or 33211 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28518460 is about 5340.2677835479. The cubic root of 28518460 is about 305.5216728392.

It can be divided in two parts, 2851 and 8460, that added together give a palindrome (11311).

The spelling of 28518460 in words is "twenty-eight million, five hundred eighteen thousand, four hundred sixty".