228747499 has 4 divisors (see below), whose sum is σ = 232497520. Its totient is φ = 224997480.

The previous prime is 228747469. The next prime is 228747539. The reversal of 228747499 is 994747822.

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 228747499 - 2¹³ = 228739307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228747439) 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, 1874919 + ... + 1875040.

It is an arithmetic number, because the mean of its divisors is an integer number (58124380).

Almost surely, 2^228747499 is an apocalyptic number.

228747499 is a deficient number, since it is larger than the sum of its proper divisors (3750021).

228747499 is an equidigital number, since it uses as much as digits as its factorization.

228747499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750020.

The product of its digits is 2032128, while the sum is 52.

The square root of 228747499 is about 15124.4007815186. The cubic root of 228747499 is about 611.5783714669.

The spelling of 228747499 in words is "two hundred twenty-eight million, seven hundred forty-seven thousand, four hundred ninety-nine".