227780993 has 32 divisors (see below), whose sum is σ = 265939200. Its totient is φ = 193177600.

The previous prime is 227780989. The next prime is 227781007. The reversal of 227780993 is 399087722.

It is not a de Polignac number, because 227780993 - 2² = 227780989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227780923) 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 31 ways as a sum of consecutive naturals, for example, 2015705 + ... + 2015817.

It is an arithmetic number, because the mean of its divisors is an integer number (8310600).

Almost surely, 2^227780993 is an apocalyptic number.

It is an amenable number.

227780993 is a deficient number, since it is larger than the sum of its proper divisors (38158207).

227780993 is a wasteful number, since it uses less digits than its factorization.

227780993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 227780993 is about 15092.4150817555. The cubic root of 227780993 is about 610.7158066643.

The spelling of 227780993 in words is "two hundred twenty-seven million, seven hundred eighty thousand, nine hundred ninety-three".