120728527 has 4 divisors (see below), whose sum is σ = 127082680. Its totient is φ = 114374376.

The previous prime is 120728513. The next prime is 120728533. The reversal of 120728527 is 725827021.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-120728527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120728492 and 120728501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120798527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3177048 + ... + 3177085.

It is an arithmetic number, because the mean of its divisors is an integer number (31770670).

Almost surely, 2^120728527 is an apocalyptic number.

120728527 is a deficient number, since it is larger than the sum of its proper divisors (6354153).

120728527 is an equidigital number, since it uses as much as digits as its factorization.

120728527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354152.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 120728527 is about 10987.6533891455. The cubic root of 120728527 is about 494.2385694977.

The spelling of 120728527 in words is "one hundred twenty million, seven hundred twenty-eight thousand, five hundred twenty-seven".