1228710535 has 16 divisors (see below), whose sum is σ = 1588849920. Its totient is φ = 906796800.

The previous prime is 1228710517. The next prime is 1228710557. The reversal of 1228710535 is 5350178221.

It is not a de Polignac number, because 1228710535 - 2⁷ = 1228710407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228710535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121971 + ... + 131659.

It is an arithmetic number, because the mean of its divisors is an integer number (99303120).

Almost surely, 2^1228710535 is an apocalyptic number.

1228710535 is a deficient number, since it is larger than the sum of its proper divisors (360139385).

1228710535 is a wasteful number, since it uses less digits than its factorization.

1228710535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11658.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1228710535 is about 35052.9675633890. The cubic root of 1228710535 is about 1071.0667252216.

Adding to 1228710535 its reverse (5350178221), we get a palindrome (6578888756).

It can be divided in two parts, 12287 and 10535, that added together give a palindrome (22822).

The spelling of 1228710535 in words is "one billion, two hundred twenty-eight million, seven hundred ten thousand, five hundred thirty-five".