120847720 has 48 divisors (see below), whose sum is σ = 316305540. Its totient is φ = 41432832.

The previous prime is 120847717. The next prime is 120847723. The reversal of 120847720 is 27748021.

It is an interprime number because it is at equal distance from previous prime (120847717) and next prime (120847723).

It can be written as a sum of positive squares in 2 ways, for example, as 120165444 + 682276 = 10962^2 + 826^2 .

It is not an unprimeable number, because it can be changed into a prime (120847723) 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, 28869 + ... + 32788.

Almost surely, 2^120847720 is an apocalyptic number.

120847720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120847720 is an abundant number, since it is smaller than the sum of its proper divisors (195457820).

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

120847720 is a wasteful number, since it uses less digits than its factorization.

120847720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61682 (or 61671 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 120847720 is about 10993.0760026482. The cubic root of 120847720 is about 494.4011668088.

The spelling of 120847720 in words is "one hundred twenty million, eight hundred forty-seven thousand, seven hundred twenty".