27428790 has 16 divisors (see below), whose sum is σ = 65829168. Its totient is φ = 7314336.

The previous prime is 27428783. The next prime is 27428813. The reversal of 27428790 is 9782472.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 457117 + ... + 457176.

It is an arithmetic number, because the mean of its divisors is an integer number (4114323).

Almost surely, 2^27428790 is an apocalyptic number.

27428790 is an abundant number, since it is smaller than the sum of its proper divisors (38400378).

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

27428790 is a wasteful number, since it uses less digits than its factorization.

27428790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914303.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 27428790 is about 5237.2502327080. The cubic root of 27428790 is about 301.5797775187.

The spelling of 27428790 in words is "twenty-seven million, four hundred twenty-eight thousand, seven hundred ninety".