120028730 has 16 divisors (see below), whose sum is σ = 221322024. Its totient is φ = 46840320.

The previous prime is 120028723. The next prime is 120028801. The reversal of 120028730 is 37820021.

It can be written as a sum of positive squares in 4 ways, for example, as 72982849 + 47045881 = 8543^2 + 6859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120028696 and 120028705.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 145967 + ... + 146786.

Almost surely, 2^120028730 is an apocalyptic number.

120028730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120028730 is a deficient number, since it is larger than the sum of its proper divisors (101293294).

120028730 is a wasteful number, since it uses less digits than its factorization.

120028730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292801.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 120028730 is about 10955.7624107134. The cubic root of 120028730 is about 493.2817752100.

Adding to 120028730 its reverse (37820021), we get a palindrome (157848751).

The spelling of 120028730 in words is "one hundred twenty million, twenty-eight thousand, seven hundred thirty".