1972271140 has 48 divisors (see below), whose sum is σ = 4736051712. Its totient is φ = 675835776.

The previous prime is 1972271123. The next prime is 1972271141. The reversal of 1972271140 is 411722791.

It is a junction number, because it is equal to n+sod(n) for n = 1972271096 and 1972271105.

It is not an unprimeable number, because it can be changed into a prime (1972271141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407374 + ... + 412186.

It is an arithmetic number, because the mean of its divisors is an integer number (98667744).

Almost surely, 2^1972271140 is an apocalyptic number.

1972271140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1972271140 is an abundant number, since it is smaller than the sum of its proper divisors (2763780572).

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

1972271140 is a wasteful number, since it uses less digits than its factorization.

1972271140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7756 (or 7754 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1972271140 is about 44410.2594002782. The cubic root of 1972271140 is about 1254.0712355040.

The spelling of 1972271140 in words is "one billion, nine hundred seventy-two million, two hundred seventy-one thousand, one hundred forty".