120728534 has 4 divisors (see below), whose sum is σ = 181092804. Its totient is φ = 60364266.

The previous prime is 120728533. The next prime is 120728549. The reversal of 120728534 is 435827021.

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

It is a self number, because there is not a number n which added to its sum of digits gives 120728534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120728533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30182132 + ... + 30182135.

It is an arithmetic number, because the mean of its divisors is an integer number (45273201).

Almost surely, 2^120728534 is an apocalyptic number.

120728534 is a deficient number, since it is larger than the sum of its proper divisors (60364270).

120728534 is an equidigital number, since it uses as much as digits as its factorization.

120728534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60364269.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 120728534 is about 10987.6537076848. The cubic root of 120728534 is about 494.2385790499.

The spelling of 120728534 in words is "one hundred twenty million, seven hundred twenty-eight thousand, five hundred thirty-four".