28105032 has 32 divisors (see below), whose sum is σ = 70408800. Its totient is φ = 9348864.

The previous prime is 28105019. The next prime is 28105069. The reversal of 28105032 is 23050182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14928 + ... + 16704.

It is an arithmetic number, because the mean of its divisors is an integer number (2200275).

Almost surely, 2^28105032 is an apocalyptic number.

It is an amenable number.

28105032 is an abundant number, since it is smaller than the sum of its proper divisors (42303768).

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

28105032 is a wasteful number, since it uses less digits than its factorization.

28105032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 28105032 is about 5301.4179235371. The cubic root of 28105032 is about 304.0381127193.

The spelling of 28105032 in words is "twenty-eight million, one hundred five thousand, thirty-two".