228722951 has 4 divisors (see below), whose sum is σ = 229244400. Its totient is φ = 228201504.

The previous prime is 228722941. The next prime is 228722957. The reversal of 228722951 is 159227822.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228722951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228722957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260066 + ... + 260943.

It is an arithmetic number, because the mean of its divisors is an integer number (57311100).

Almost surely, 2^228722951 is an apocalyptic number.

228722951 is a deficient number, since it is larger than the sum of its proper divisors (521449).

228722951 is an equidigital number, since it uses as much as digits as its factorization.

228722951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521448.

The product of its digits is 40320, while the sum is 38.

The square root of 228722951 is about 15123.5892234615. The cubic root of 228722951 is about 611.5564935404.

The spelling of 228722951 in words is "two hundred twenty-eight million, seven hundred twenty-two thousand, nine hundred fifty-one".