28495700 has 18 divisors (see below), whose sum is σ = 61835886. Its totient is φ = 11398240.

The previous prime is 28495699. The next prime is 28495717. The reversal of 28495700 is 759482.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5895184 + 22600516 = 2428^2 + 4754^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142379 + ... + 142578.

It is an arithmetic number, because the mean of its divisors is an integer number (3435327).

Almost surely, 2^28495700 is an apocalyptic number.

28495700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28495700 is an abundant number, since it is smaller than the sum of its proper divisors (33340186).

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

28495700 is a wasteful number, since it uses less digits than its factorization.

28495700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284971 (or 284964 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28495700 is about 5338.1363789248. The cubic root of 28495700 is about 305.4403743404.

The spelling of 28495700 in words is "twenty-eight million, four hundred ninety-five thousand, seven hundred".