245971730 has 8 divisors (see below), whose sum is σ = 442749132. Its totient is φ = 98388688.

The previous prime is 245971723. The next prime is 245971753. The reversal of 245971730 is 37179542.

245971730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 245768329 + 203401 = 15677^2 + 451^2 .

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, 12298577 + ... + 12298596.

Almost surely, 2^245971730 is an apocalyptic number.

245971730 is a deficient number, since it is larger than the sum of its proper divisors (196777402).

245971730 is a wasteful number, since it uses less digits than its factorization.

245971730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24597180.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 245971730 is about 15683.4859007811. The cubic root of 245971730 is about 626.5586526651.

The spelling of 245971730 in words is "two hundred forty-five million, nine hundred seventy-one thousand, seven hundred thirty".