4231778 has 8 divisors (see below), whose sum is σ = 6388572. Its totient is φ = 2102256.

The previous prime is 4231771. The next prime is 4231781. The reversal of 4231778 is 8771324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4231249 + 529 = 2057^2 + 23^2 .

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁷ + 3⁹ + 1 + 7³ + 7⁵ + 8³ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4231771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6425 + ... + 7052.

Almost surely, 2^4231778 is an apocalyptic number.

4231778 is a deficient number, since it is larger than the sum of its proper divisors (2156794).

4231778 is a wasteful number, since it uses less digits than its factorization.

4231778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636.

The product of its digits is 9408, while the sum is 32.

The square root of 4231778 is about 2057.1285812997. The cubic root of 4231778 is about 161.7487595728.

The spelling of 4231778 in words is "four million, two hundred thirty-one thousand, seven hundred seventy-eight".