730155408 has 80 divisors (see below), whose sum is σ = 1990200000. Its totient is φ = 230031360.

The previous prime is 730155407. The next prime is 730155449. The reversal of 730155408 is 804551037.

It is not an unprimeable number, because it can be changed into a prime (730155407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583968 + ... + 585216.

It is an arithmetic number, because the mean of its divisors is an integer number (24877500).

Almost surely, 2^730155408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730155408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995100000).

730155408 is an abundant number, since it is smaller than the sum of its proper divisors (1260044592).

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

730155408 is a wasteful number, since it uses less digits than its factorization.

730155408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 730155408 is about 27021.3879732334. The cubic root of 730155408 is about 900.4752255664.

The spelling of 730155408 in words is "seven hundred thirty million, one hundred fifty-five thousand, four hundred eight".