27958628 has 6 divisors (see below), whose sum is σ = 48927606. Its totient is φ = 13979312.

The previous prime is 27958627. The next prime is 27958649. The reversal of 27958628 is 82685972.

It can be written as a sum of positive squares in only one way, i.e., 25623844 + 2334784 = 5062^2 + 1528^2 .

It is not an unprimeable number, because it can be changed into a prime (27958627) 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 as a sum of consecutive naturals, namely, 3494825 + ... + 3494832.

It is an arithmetic number, because the mean of its divisors is an integer number (8154601).

Almost surely, 2^27958628 is an apocalyptic number.

It is an amenable number.

27958628 is a deficient number, since it is larger than the sum of its proper divisors (20968978).

27958628 is a wasteful number, since it uses less digits than its factorization.

27958628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989661 (or 6989659 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 27958628 is about 5287.5918904545. The cubic root of 27958628 is about 303.5092642287.

The spelling of 27958628 in words is "twenty-seven million, nine hundred fifty-eight thousand, six hundred twenty-eight".