9209952720 has 280 divisors, whose sum is σ = 32527680000. Its totient is φ = 2423685888.

The previous prime is 9209952679. The next prime is 9209952737. The reversal of 9209952720 is 272599029.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4606281 + ... + 4608279.

Almost surely, 2^9209952720 is an apocalyptic number.

9209952720 is a gapful number since it is divisible by the number (90) 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 9209952720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16263840000).

9209952720 is an abundant number, since it is smaller than the sum of its proper divisors (23317727280).

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

9209952720 is a wasteful number, since it uses less digits than its factorization.

9209952720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 9209952720 is about 95968.4985815658. The cubic root of 9209952720 is about 2096.1344398840.

The spelling of 9209952720 in words is "nine billion, two hundred nine million, nine hundred fifty-two thousand, seven hundred twenty".