210540772 has 12 divisors (see below), whose sum is σ = 396788476. Its totient is φ = 97172640.

The previous prime is 210540769. The next prime is 210540779. The reversal of 210540772 is 277045012.

It can be written as a sum of positive squares in 2 ways, for example, as 78428736 + 132112036 = 8856^2 + 11494^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210540772.

It is not an unprimeable number, because it can be changed into a prime (210540779) 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, 2024379 + ... + 2024482.

Almost surely, 2^210540772 is an apocalyptic number.

It is an amenable number.

210540772 is a deficient number, since it is larger than the sum of its proper divisors (186247704).

210540772 is a wasteful number, since it uses less digits than its factorization.

210540772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048878 (or 4048876 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 210540772 is about 14510.0231564254. The cubic root of 210540772 is about 594.9019653468.

Adding to 210540772 its reverse (277045012), we get a palindrome (487585784).

The spelling of 210540772 in words is "two hundred ten million, five hundred forty thousand, seven hundred seventy-two".