228735787 has 16 divisors (see below), whose sum is σ = 266482944. Its totient is φ = 192276000.

The previous prime is 228735779. The next prime is 228735821. The reversal of 228735787 is 787537822.

It is not a de Polignac number, because 228735787 - 2³ = 228735779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228735787.

It is not an unprimeable number, because it can be changed into a prime (228735707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209112 + ... + 210202.

It is an arithmetic number, because the mean of its divisors is an integer number (16655184).

Almost surely, 2^228735787 is an apocalyptic number.

228735787 is a deficient number, since it is larger than the sum of its proper divisors (37747157).

228735787 is a wasteful number, since it uses less digits than its factorization.

228735787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650.

The product of its digits is 1317120, while the sum is 49.

The square root of 228735787 is about 15124.0135876691. The cubic root of 228735787 is about 611.5679335704.

The spelling of 228735787 in words is "two hundred twenty-eight million, seven hundred thirty-five thousand, seven hundred eighty-seven".