1220735830 has 16 divisors (see below), whose sum is σ = 2326579200. Its totient is φ = 459571072.

The previous prime is 1220735827. The next prime is 1220735839. The reversal of 1220735830 is 385370221.

It is a junction number, because it is equal to n+sod(n) for n = 1220735792 and 1220735801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220735839) 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, 3590230 + ... + 3590569.

It is an arithmetic number, because the mean of its divisors is an integer number (145411200).

Almost surely, 2^1220735830 is an apocalyptic number.

1220735830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220735830 is a deficient number, since it is larger than the sum of its proper divisors (1105843370).

1220735830 is a wasteful number, since it uses less digits than its factorization.

1220735830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180823.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1220735830 is about 34939.0301811599. The cubic root of 1220735830 is about 1068.7445110806.

The spelling of 1220735830 in words is "one billion, two hundred twenty million, seven hundred thirty-five thousand, eight hundred thirty".