245445730 has 8 divisors (see below), whose sum is σ = 441802332. Its totient is φ = 98178288.

The previous prime is 245445709. The next prime is 245445751. The reversal of 245445730 is 37544542.

It is an interprime number because it is at equal distance from previous prime (245445709) and next prime (245445751).

It can be written as a sum of positive squares in 2 ways, for example, as 239909121 + 5536609 = 15489^2 + 2353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12272277 + ... + 12272296.

Almost surely, 2^245445730 is an apocalyptic number.

245445730 is a deficient number, since it is larger than the sum of its proper divisors (196356602).

245445730 is a wasteful number, since it uses less digits than its factorization.

245445730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24544580.

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 245445730 is about 15666.7076949817. The cubic root of 245445730 is about 626.1117109854. Note that the first 3 decimals are identical.

It can be divided in two parts, 2454 and 45730, that added together give a palindrome (48184).

The spelling of 245445730 in words is "two hundred forty-five million, four hundred forty-five thousand, seven hundred thirty".