28476500 has 72 divisors (see below), whose sum is σ = 67544568. Its totient is φ = 10483200.

The previous prime is 28476493. The next prime is 28476523. The reversal of 28476500 is 567482.

It can be written as a sum of positive squares in 12 ways, for example, as 28366276 + 110224 = 5326^2 + 332^2 .

It is a super-2 number, since 2×28476500² = 1621822104500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84332 + ... + 84668.

It is an arithmetic number, because the mean of its divisors is an integer number (938119).

Almost surely, 2^28476500 is an apocalyptic number.

28476500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28476500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33772284).

28476500 is an abundant number, since it is smaller than the sum of its proper divisors (39068068).

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

28476500 is a wasteful number, since it uses less digits than its factorization.

28476500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 28476500 is about 5336.3376954612. The cubic root of 28476500 is about 305.3717584579.

The spelling of 28476500 in words is "twenty-eight million, four hundred seventy-six thousand, five hundred".