27790458 has 8 divisors (see below), whose sum is σ = 55580928. Its totient is φ = 9263484.

The previous prime is 27790457. The next prime is 27790459. The reversal of 27790458 is 85409772.

It is an interprime number because it is at equal distance from previous prime (27790457) and next prime (27790459).

It is a sphenic number, since it is the product of 3 distinct primes.

27790458 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (27790457) 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 3 ways as a sum of consecutive naturals, for example, 2315866 + ... + 2315877.

It is an arithmetic number, because the mean of its divisors is an integer number (6947616).

Almost surely, 2^27790458 is an apocalyptic number.

27790458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27790458 is a wasteful number, since it uses less digits than its factorization.

27790458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631748.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 27790458 is about 5271.6655811992. The cubic root of 27790458 is about 302.8995081142.

The spelling of 27790458 in words is "twenty-seven million, seven hundred ninety thousand, four hundred fifty-eight".