228102502 has 4 divisors (see below), whose sum is σ = 342153756. Its totient is φ = 114051250.

The previous prime is 228102499. The next prime is 228102503. The reversal of 228102502 is 205201822.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228102503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57025624 + ... + 57025627.

It is an arithmetic number, because the mean of its divisors is an integer number (85538439).

Almost surely, 2^228102502 is an apocalyptic number.

228102502 is a deficient number, since it is larger than the sum of its proper divisors (114051254).

228102502 is a wasteful number, since it uses less digits than its factorization.

228102502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114051253.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 228102502 is about 15103.0626695383. The cubic root of 228102502 is about 611.0030099060.

The spelling of 228102502 in words is "two hundred twenty-eight million, one hundred two thousand, five hundred two".