28862100 has 54 divisors (see below), whose sum is σ = 90469470. Its totient is φ = 7696320.

The previous prime is 28862087. The next prime is 28862101. The reversal of 28862100 is 126882.

It can be written as a sum of positive squares in 3 ways, for example, as 5008644 + 23853456 = 2238^2 + 4884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28862101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15135 + ... + 16934.

Almost surely, 2^28862100 is an apocalyptic number.

28862100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28862100 is an abundant number, since it is smaller than the sum of its proper divisors (61607370).

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

28862100 is a wasteful number, since it uses less digits than its factorization.

28862100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32089 (or 32079 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 28862100 is about 5372.3458563276. The cubic root of 28862100 is about 306.7439287580.

Adding to 28862100 its reverse (126882), we get a palindrome (28988982).

The spelling of 28862100 in words is "twenty-eight million, eight hundred sixty-two thousand, one hundred".