1228305830 has 16 divisors (see below), whose sum is σ = 2212095744. Its totient is φ = 491067840.

The previous prime is 1228305829. The next prime is 1228305833. The reversal of 1228305830 is 385038221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228305833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10886 + ... + 50745.

It is an arithmetic number, because the mean of its divisors is an integer number (138255984).

Almost surely, 2^1228305830 is an apocalyptic number.

1228305830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228305830 is a deficient number, since it is larger than the sum of its proper divisors (983789914).

1228305830 is a wasteful number, since it uses less digits than its factorization.

1228305830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63631.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1228305830 is about 35047.1943242252. The cubic root of 1228305830 is about 1070.9491185528.

The spelling of 1228305830 in words is "one billion, two hundred twenty-eight million, three hundred five thousand, eight hundred thirty".