28232700 has 36 divisors (see below), whose sum is σ = 81687480. Its totient is φ = 7528640.

The previous prime is 28232683. The next prime is 28232713. The reversal of 28232700 is 723282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46755 + ... + 47354.

Almost surely, 2^28232700 is an apocalyptic number.

28232700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28232700 is an abundant number, since it is smaller than the sum of its proper divisors (53454780).

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

28232700 is a wasteful number, since it uses less digits than its factorization.

28232700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94126 (or 94119 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 28232700 is about 5313.4452100309. The cubic root of 28232700 is about 304.4977849877.

Adding to 28232700 its reverse (723282), we get a palindrome (28955982).

The spelling of 28232700 in words is "twenty-eight million, two hundred thirty-two thousand, seven hundred".