724750128 has 30 divisors (see below), whose sum is σ = 2028294164. Its totient is φ = 241583328.

The previous prime is 724750123. The next prime is 724750129. The reversal of 724750128 is 821057427.

724750128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 724750092 and 724750101.

It is not an unprimeable number, because it can be changed into a prime (724750121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2516350 + ... + 2516637.

Almost surely, 2^724750128 is an apocalyptic number.

It is an amenable number.

724750128 is an abundant number, since it is smaller than the sum of its proper divisors (1303544036).

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

724750128 is a wasteful number, since it uses less digits than its factorization.

724750128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033001 (or 5032992 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 724750128 is about 26921.1836292537. The cubic root of 724750128 is about 898.2476718581.

It can be divided in two parts, 7247 and 50128, that added together give a palindrome (57375).

The spelling of 724750128 in words is "seven hundred twenty-four million, seven hundred fifty thousand, one hundred twenty-eight".