27929928 has 32 divisors (see below), whose sum is σ = 75196800. Its totient is φ = 8593728.

The previous prime is 27929927. The next prime is 27929947. The reversal of 27929928 is 82992972.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27929927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44448 + ... + 45071.

It is an arithmetic number, because the mean of its divisors is an integer number (2349900).

Almost surely, 2^27929928 is an apocalyptic number.

It is an amenable number.

27929928 is an abundant number, since it is smaller than the sum of its proper divisors (47266872).

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

27929928 is a wasteful number, since it uses less digits than its factorization.

27929928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89541 (or 89537 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 27929928 is about 5284.8772928044. The cubic root of 27929928 is about 303.4053762250.

It can be divided in two parts, 2792 and 9928, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 27929928 in words is "twenty-seven million, nine hundred twenty-nine thousand, nine hundred twenty-eight".