28011752 has 8 divisors (see below), whose sum is σ = 52522050. Its totient is φ = 14005872.

The previous prime is 28011721. The next prime is 28011761. The reversal of 28011752 is 25711082.

It can be written as a sum of positive squares in only one way, i.e., 26357956 + 1653796 = 5134^2 + 1286^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1750727 + ... + 1750742.

Almost surely, 2^28011752 is an apocalyptic number.

It is an amenable number.

28011752 is a deficient number, since it is larger than the sum of its proper divisors (24510298).

28011752 is a wasteful number, since it uses less digits than its factorization.

28011752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501475 (or 3501471 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 28011752 is about 5292.6129652564. The cubic root of 28011752 is about 303.7013745710.

The spelling of 28011752 in words is "twenty-eight million, eleven thousand, seven hundred fifty-two".