228506741 has 8 divisors (see below), whose sum is σ = 242167320. Its totient is φ = 214870528.

The previous prime is 228506737. The next prime is 228506753. The reversal of 228506741 is 147605822.

It can be written as a sum of positive squares in 4 ways, for example, as 192626641 + 35880100 = 13879^2 + 5990^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 228506741 - 2² = 228506737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228506701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15425 + ... + 26361.

It is an arithmetic number, because the mean of its divisors is an integer number (30270915).

Almost surely, 2^228506741 is an apocalyptic number.

It is an amenable number.

228506741 is a deficient number, since it is larger than the sum of its proper divisors (13660579).

228506741 is a wasteful number, since it uses less digits than its factorization.

228506741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12183.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 228506741 is about 15116.4394286485. The cubic root of 228506741 is about 611.3637329474.

The spelling of 228506741 in words is "two hundred twenty-eight million, five hundred six thousand, seven hundred forty-one".