27728470 has 32 divisors (see below), whose sum is σ = 62228736. Its totient is φ = 8642400.

The previous prime is 27728431. The next prime is 27728473. The reversal of 27728470 is 7482772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728473) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 17236 + ... + 18775.

It is an arithmetic number, because the mean of its divisors is an integer number (1944648).

Almost surely, 2^27728470 is an apocalyptic number.

27728470 is an abundant number, since it is smaller than the sum of its proper divisors (34500266).

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

27728470 is a wasteful number, since it uses less digits than its factorization.

27728470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36036.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 27728470 is about 5265.7829427351. The cubic root of 27728470 is about 302.6741296479.

The spelling of 27728470 in words is "twenty-seven million, seven hundred twenty-eight thousand, four hundred seventy".