27920419 has 2 divisors, whose sum is σ = 27920420. Its totient is φ = 27920418.

The previous prime is 27920407. The next prime is 27920437. The reversal of 27920419 is 91402972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27920419 - 2¹⁷ = 27789347 is a prime.

It is a super-2 number, since 2×27920419² = 1559099594271122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27920449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13960209 + 13960210.

It is an arithmetic number, because the mean of its divisors is an integer number (13960210).

Almost surely, 2^27920419 is an apocalyptic number.

27920419 is a deficient number, since it is larger than the sum of its proper divisors (1).

27920419 is an equidigital number, since it uses as much as digits as its factorization.

27920419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 27920419 is about 5283.9775737601. The cubic root of 27920419 is about 303.3709399362.

The spelling of 27920419 in words is "twenty-seven million, nine hundred twenty thousand, four hundred nineteen".