227428437 has 4 divisors (see below), whose sum is σ = 303237920. Its totient is φ = 151618956.

The previous prime is 227428403. The next prime is 227428447. The reversal of 227428437 is 734824722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 227428437 - 2⁸ = 227428181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 227428395 and 227428404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227428447) 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 3 ways as a sum of consecutive naturals, for example, 37904737 + ... + 37904742.

It is an arithmetic number, because the mean of its divisors is an integer number (75809480).

Almost surely, 2^227428437 is an apocalyptic number.

It is an amenable number.

227428437 is a deficient number, since it is larger than the sum of its proper divisors (75809483).

227428437 is an equidigital number, since it uses as much as digits as its factorization.

227428437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75809482.

The product of its digits is 150528, while the sum is 39.

The square root of 227428437 is about 15080.7306520606. The cubic root of 227428437 is about 610.4005583783.

The spelling of 227428437 in words is "two hundred twenty-seven million, four hundred twenty-eight thousand, four hundred thirty-seven".