728141730 has 32 divisors (see below), whose sum is σ = 1751315904. Its totient is φ = 193751616.

The previous prime is 728141723. The next prime is 728141753. The reversal of 728141730 is 37141827.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 728141691 and 728141700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11977 + ... + 39996.

It is an arithmetic number, because the mean of its divisors is an integer number (54728622).

Almost surely, 2^728141730 is an apocalyptic number.

728141730 is an abundant number, since it is smaller than the sum of its proper divisors (1023174174).

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

728141730 is a wasteful number, since it uses less digits than its factorization.

728141730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52450.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 728141730 is about 26984.1014302867. The cubic root of 728141730 is about 899.6466637690.

The spelling of 728141730 in words is "seven hundred twenty-eight million, one hundred forty-one thousand, seven hundred thirty".