245542730 has 64 divisors (see below), whose sum is σ = 486570240. Its totient is φ = 88833024.

The previous prime is 245542729. The next prime is 245542753. The reversal of 245542730 is 37245542.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647681 + ... + 648059.

It is an arithmetic number, because the mean of its divisors is an integer number (7602660).

Almost surely, 2^245542730 is an apocalyptic number.

245542730 is a deficient number, since it is larger than the sum of its proper divisors (241027510).

245542730 is a wasteful number, since it uses less digits than its factorization.

245542730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 245542730 is about 15669.8031257575. The cubic root of 245542730 is about 626.1941797756.

The spelling of 245542730 in words is "two hundred forty-five million, five hundred forty-two thousand, seven hundred thirty".