245743730 has 64 divisors (see below), whose sum is σ = 477757440. Its totient is φ = 90788544.

The previous prime is 245743711. The next prime is 245743741. The reversal of 245743730 is 37347542.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1372781 + ... + 1372959.

It is an arithmetic number, because the mean of its divisors is an integer number (7464960).

Almost surely, 2^245743730 is an apocalyptic number.

245743730 is a deficient number, since it is larger than the sum of its proper divisors (232013710).

245743730 is a wasteful number, since it uses less digits than its factorization.

245743730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383.

The product of its (nonzero) digits is 70560, while the sum is 35.

The square root of 245743730 is about 15676.2154233731. The cubic root of 245743730 is about 626.3649996048.

The spelling of 245743730 in words is "two hundred forty-five million, seven hundred forty-three thousand, seven hundred thirty".