8465729730 has 64 divisors (see below), whose sum is σ = 20639121408. Its totient is φ = 2221929920.

The previous prime is 8465729711. The next prime is 8465729743. The reversal of 8465729730 is 379275648.

It is a super-2 number, since 2×8465729730² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1375039 + ... + 1381181.

It is an arithmetic number, because the mean of its divisors is an integer number (322486272).

Almost surely, 2^8465729730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8465729730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10319560704).

8465729730 is an abundant number, since it is smaller than the sum of its proper divisors (12173391678).

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

8465729730 is a wasteful number, since it uses less digits than its factorization.

8465729730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The square root of 8465729730 is about 92009.4002262812. The cubic root of 8465729730 is about 2038.0811228596.

The spelling of 8465729730 in words is "eight billion, four hundred sixty-five million, seven hundred twenty-nine thousand, seven hundred thirty".