28332100 has 36 divisors (see below), whose sum is σ = 61746048. Its totient is φ = 11284000.

The previous prime is 28332077. The next prime is 28332131. The reversal of 28332100 is 123382.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30645 + ... + 31555.

It is an arithmetic number, because the mean of its divisors is an integer number (1715168).

Almost surely, 2^28332100 is an apocalyptic number.

28332100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28332100 is an abundant number, since it is smaller than the sum of its proper divisors (33413948).

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

28332100 is a wasteful number, since it uses less digits than its factorization.

28332100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 28332100 is about 5322.7906214692. The cubic root of 28332100 is about 304.8547189485.

Adding to 28332100 its reverse (123382), we get a palindrome (28455482).

The spelling of 28332100 in words is "twenty-eight million, three hundred thirty-two thousand, one hundred".