245772730 has 24 divisors (see below), whose sum is σ = 514619028. Its totient is φ = 84264768.

The previous prime is 245772727. The next prime is 245772749. The reversal of 245772730 is 37277542.

It can be written as a sum of positive squares in 2 ways, for example, as 241274089 + 4498641 = 15533^2 + 2121^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 245772730.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250299 + ... + 251278.

Almost surely, 2^245772730 is an apocalyptic number.

245772730 is an abundant number, since it is smaller than the sum of its proper divisors (268846298).

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

245772730 is a wasteful number, since it uses less digits than its factorization.

245772730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501598 (or 501591 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 245772730 is about 15677.1403642374. The cubic root of 245772730 is about 626.3896375620.

The spelling of 245772730 in words is "two hundred forty-five million, seven hundred seventy-two thousand, seven hundred thirty".