730153728 has 54 divisors (see below), whose sum is σ = 2105219844. Its totient is φ = 243383808.

The previous prime is 730153703. The next prime is 730153747. The reversal of 730153728 is 827351037.

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 = 730153692 and 730153701.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156150 + ... + 160757.

Almost surely, 2^730153728 is an apocalyptic number.

It is an amenable number.

730153728 is an abundant number, since it is smaller than the sum of its proper divisors (1375066116).

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

730153728 is a wasteful number, since it uses less digits than its factorization.

730153728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316929 (or 316912 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 730153728 is about 27021.3568867294. The cubic root of 730153728 is about 900.4745349374.

The spelling of 730153728 in words is "seven hundred thirty million, one hundred fifty-three thousand, seven hundred twenty-eight".