228607749 has 12 divisors (see below), whose sum is σ = 334735596. Its totient is φ = 150316992.

The previous prime is 228607727. The next prime is 228607763. The reversal of 228607749 is 947706822.

It can be written as a sum of positive squares in 2 ways, for example, as 48860100 + 179747649 = 6990^2 + 13407^2 .

It is not a de Polignac number, because 228607749 - 2¹³ = 228599557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228607549) 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 11 ways as a sum of consecutive naturals, for example, 173322 + ... + 174635.

It is an arithmetic number, because the mean of its divisors is an integer number (27894633).

Almost surely, 2^228607749 is an apocalyptic number.

It is an amenable number.

228607749 is a deficient number, since it is larger than the sum of its proper divisors (106127847).

228607749 is a wasteful number, since it uses less digits than its factorization.

228607749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348036 (or 348033 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 228607749 is about 15119.7800579241. The cubic root of 228607749 is about 611.4538010871.

The spelling of 228607749 in words is "two hundred twenty-eight million, six hundred seven thousand, seven hundred forty-nine".