245745830 has 32 divisors (see below), whose sum is σ = 487088640. Its totient is φ = 88522720.

The previous prime is 245745811. The next prime is 245745847. The reversal of 245745830 is 38547542.

It is a happy number.

245745830 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1331 + ... + 22209.

It is an arithmetic number, because the mean of its divisors is an integer number (15221520).

Almost surely, 2^245745830 is an apocalyptic number.

245745830 is a deficient number, since it is larger than the sum of its proper divisors (241342810).

245745830 is a wasteful number, since it uses less digits than its factorization.

245745830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21004.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 245745830 is about 15676.2824036823. The cubic root of 245745830 is about 626.3667837978.

The spelling of 245745830 in words is "two hundred forty-five million, seven hundred forty-five thousand, eight hundred thirty".