1972728610 has 32 divisors (see below), whose sum is σ = 3641500800. Its totient is φ = 769211520.

The previous prime is 1972728581. The next prime is 1972728613. The reversal of 1972728610 is 168272791.

It is not an unprimeable number, because it can be changed into a prime (1972728613) 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, 47581 + ... + 78799.

It is an arithmetic number, because the mean of its divisors is an integer number (113796900).

Almost surely, 2^1972728610 is an apocalyptic number.

1972728610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1972728610 is a deficient number, since it is larger than the sum of its proper divisors (1668772190).

1972728610 is a wasteful number, since it uses less digits than its factorization.

1972728610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31386.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 1972728610 is about 44415.4096007230. The cubic root of 1972728610 is about 1254.1681889782.

The spelling of 1972728610 in words is "one billion, nine hundred seventy-two million, seven hundred twenty-eight thousand, six hundred ten".