228740971 has 4 divisors (see below), whose sum is σ = 236119744. Its totient is φ = 221362200.

The previous prime is 228740923. The next prime is 228740977. The reversal of 228740971 is 179047822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228740971 - 2⁹ = 228740459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228740977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3689340 + ... + 3689401.

It is an arithmetic number, because the mean of its divisors is an integer number (59029936).

Almost surely, 2^228740971 is an apocalyptic number.

228740971 is a deficient number, since it is larger than the sum of its proper divisors (7378773).

228740971 is an equidigital number, since it uses as much as digits as its factorization.

228740971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7378772.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 228740971 is about 15124.1849697761. The cubic root of 228740971 is about 611.5725536669.

The spelling of 228740971 in words is "two hundred twenty-eight million, seven hundred forty thousand, nine hundred seventy-one".