972240912 has 120 divisors (see below), whose sum is σ = 2850454464. Its totient is φ = 308765952.

The previous prime is 972240911. The next prime is 972240917. The reversal of 972240912 is 219042279.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (972240911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1234983 + ... + 1235769.

Almost surely, 2^972240912 is an apocalyptic number.

972240912 is a gapful number since it is divisible by the number (92) 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 972240912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1425227232).

972240912 is an abundant number, since it is smaller than the sum of its proper divisors (1878213552).

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

972240912 is a wasteful number, since it uses less digits than its factorization.

972240912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 972240912 is about 31180.7779248690. Note that the first 3 decimals coincide. The cubic root of 972240912 is about 990.6600067863.

It can be divided in two parts, 97 and 2240912, that added together give a square (2241009 = 1497²).

The spelling of 972240912 in words is "nine hundred seventy-two million, two hundred forty thousand, nine hundred twelve".