245307730 has 8 divisors (see below), whose sum is σ = 441553932. Its totient is φ = 98123088.

The previous prime is 245307709. The next prime is 245307737. The reversal of 245307730 is 37703542.

It can be written as a sum of positive squares in 2 ways, for example, as 244203129 + 1104601 = 15627^2 + 1051^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 245307692 and 245307701.

It is not an unprimeable number, because it can be changed into a prime (245307737) 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, 12265377 + ... + 12265396.

Almost surely, 2^245307730 is an apocalyptic number.

245307730 is a deficient number, since it is larger than the sum of its proper divisors (196246202).

245307730 is a wasteful number, since it uses less digits than its factorization.

245307730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24530780.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 245307730 is about 15662.3028319593. The cubic root of 245307730 is about 625.9943468002.

The spelling of 245307730 in words is "two hundred forty-five million, three hundred seven thousand, seven hundred thirty".