1228713450 has 24 divisors (see below), whose sum is σ = 3047209728. Its totient is φ = 327656880.

The previous prime is 1228713419. The next prime is 1228713457. The reversal of 1228713450 is 543178221.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1228713457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4095562 + ... + 4095861.

It is an arithmetic number, because the mean of its divisors is an integer number (126967072).

Almost surely, 2^1228713450 is an apocalyptic number.

1228713450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228713450 is an abundant number, since it is smaller than the sum of its proper divisors (1818496278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228713450 is a wasteful number, since it uses less digits than its factorization.

1228713450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191438 (or 8191433 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1228713450 is about 35053.0091432961. The cubic root of 1228713450 is about 1071.0675722225.

The spelling of 1228713450 in words is "one billion, two hundred twenty-eight million, seven hundred thirteen thousand, four hundred fifty".