30729443460 has 96 divisors (see below), whose sum is σ = 89705024640. Its totient is φ = 7852895232.

The previous prime is 30729443447. The next prime is 30729443467. The reversal of 30729443460 is 6434492703.

It is a happy number.

It is a super-2 number, since 2×30729443460² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30729443467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24376 + ... + 249104.

It is an arithmetic number, because the mean of its divisors is an integer number (934427340).

Almost surely, 2^30729443460 is an apocalyptic number.

30729443460 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30729443460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44852512320).

30729443460 is an abundant number, since it is smaller than the sum of its proper divisors (58975581180).

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

30729443460 is a wasteful number, since it uses less digits than its factorization.

30729443460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224837 (or 224835 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 30729443460 in words is "thirty billion, seven hundred twenty-nine million, four hundred forty-three thousand, four hundred sixty".