28006232 has 8 divisors (see below), whose sum is σ = 52511700. Its totient is φ = 14003112.

The previous prime is 28006229. The next prime is 28006243. The reversal of 28006232 is 23260082.

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 = 28006198 and 28006207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1750382 + ... + 1750397.

Almost surely, 2^28006232 is an apocalyptic number.

It is an amenable number.

28006232 is a deficient number, since it is larger than the sum of its proper divisors (24505468).

28006232 is a wasteful number, since it uses less digits than its factorization.

28006232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500785 (or 3500781 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28006232 is about 5292.0914580154. The cubic root of 28006232 is about 303.6814241145.

The spelling of 28006232 in words is "twenty-eight million, six thousand, two hundred thirty-two".