9429492720 has 80 divisors (see below), whose sum is σ = 29326872960. Its totient is φ = 2506321152.

The previous prime is 9429492647. The next prime is 9429492739. The reversal of 9429492720 is 272949249.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 9429492720.

It is a congruent number.

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, 9691 + ... + 137669.

It is an arithmetic number, because the mean of its divisors is an integer number (366585912).

Almost surely, 2^9429492720 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 9429492720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14663436480).

9429492720 is an abundant number, since it is smaller than the sum of its proper divisors (19897380240).

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

9429492720 is a wasteful number, since it uses less digits than its factorization.

9429492720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128302 (or 128296 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 9429492720 is about 97105.5751231617. The cubic root of 9429492720 is about 2112.6591900391.

The spelling of 9429492720 in words is "nine billion, four hundred twenty-nine million, four hundred ninety-two thousand, seven hundred twenty".