427780233 has 12 divisors (see below), whose sum is σ = 618230340. Its totient is φ = 285036576.

The previous prime is 427780187. The next prime is 427780237. The reversal of 427780233 is 332087724.

It can be written as a sum of positive squares in 2 ways, for example, as 149157369 + 278622864 = 12213^2 + 16692^2 .

It is not a de Polignac number, because 427780233 - 2²⁶ = 360671369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427780237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7135 + ... + 30107.

It is an arithmetic number, because the mean of its divisors is an integer number (51519195).

Almost surely, 2^427780233 is an apocalyptic number.

It is an amenable number.

427780233 is a deficient number, since it is larger than the sum of its proper divisors (190450107).

427780233 is a wasteful number, since it uses less digits than its factorization.

427780233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25048 (or 25045 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 427780233 is about 20682.8487641330. The cubic root of 427780233 is about 753.4831954230.

The spelling of 427780233 in words is "four hundred twenty-seven million, seven hundred eighty thousand, two hundred thirty-three".