9972270 has 96 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 2070720.

The previous prime is 9972241. The next prime is 9972329. The reversal of 9972270 is 722799.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6211 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (336960).

Almost surely, 2^9972270 is an apocalyptic number.

9972270 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9972270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16174080).

9972270 is an abundant number, since it is smaller than the sum of its proper divisors (22375890).

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

9972270 is a wasteful number, since it uses less digits than its factorization.

9972270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 9972270 is about 3157.8901184177. The cubic root of 9972270 is about 215.2441430660.

It can be divided in two parts, 9 and 972270, that added together give a palindrome (972279).

The spelling of 9972270 in words is "nine million, nine hundred seventy-two thousand, two hundred seventy".