2120572730 has 16 divisors (see below), whose sum is σ = 3831225480. Its totient is φ = 845074752.

The previous prime is 2120572711. The next prime is 2120572733. The reversal of 2120572730 is 372750212.

It can be written as a sum of positive squares in 4 ways, for example, as 956603041 + 1163969689 = 30929^2 + 34117^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120572693 and 2120572702.

It is not an unprimeable number, because it can be changed into a prime (2120572733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391469 + ... + 396848.

Almost surely, 2^2120572730 is an apocalyptic number.

2120572730 is a deficient number, since it is larger than the sum of its proper divisors (1710652750).

2120572730 is a wasteful number, since it uses less digits than its factorization.

2120572730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788593.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 2120572730 is about 46049.6767632521. The cubic root of 2120572730 is about 1284.7473308011.

The spelling of 2120572730 in words is "two billion, one hundred twenty million, five hundred seventy-two thousand, seven hundred thirty".