28611832 has 8 divisors (see below), whose sum is σ = 53647200. Its totient is φ = 14305912.

The previous prime is 28611823. The next prime is 28611851. The reversal of 28611832 is 23811682.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28611794 and 28611803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1788232 + ... + 1788247.

It is an arithmetic number, because the mean of its divisors is an integer number (6705900).

Almost surely, 2^28611832 is an apocalyptic number.

It is an amenable number.

28611832 is a deficient number, since it is larger than the sum of its proper divisors (25035368).

28611832 is a wasteful number, since it uses less digits than its factorization.

28611832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576485 (or 3576481 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 28611832 is about 5349.0028977371. The cubic root of 28611832 is about 305.8547447353.

Subtracting from 28611832 its sum of digits (31), we obtain a square (28611801 = 5349²).

The spelling of 28611832 in words is "twenty-eight million, six hundred eleven thousand, eight hundred thirty-two".