972816140 has 12 divisors (see below), whose sum is σ = 2042913936. Its totient is φ = 389126448.

The previous prime is 972816137. The next prime is 972816149. The reversal of 972816140 is 41618279.

It is a junction number, because it is equal to n+sod(n) for n = 972816094 and 972816103.

It is not an unprimeable number, because it can be changed into a prime (972816149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24320384 + ... + 24320423.

It is an arithmetic number, because the mean of its divisors is an integer number (170242828).

Almost surely, 2^972816140 is an apocalyptic number.

It is an amenable number.

972816140 is an abundant number, since it is smaller than the sum of its proper divisors (1070097796).

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

972816140 is a wasteful number, since it uses less digits than its factorization.

972816140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48640816 (or 48640814 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 972816140 is about 31190.0006412312. Note that the first 3 decimals coincide. The cubic root of 972816140 is about 990.8553434973.

The spelling of 972816140 in words is "nine hundred seventy-two million, eight hundred sixteen thousand, one hundred forty".