245165740 has 48 divisors (see below), whose sum is σ = 565528320. Its totient is φ = 88862400.

The previous prime is 245165731. The next prime is 245165741. The reversal of 245165740 is 47561542.

It is a junction number, because it is equal to n+sod(n) for n = 245165696 and 245165705.

It is not an unprimeable number, because it can be changed into a prime (245165741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5286 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (11781840).

Almost surely, 2^245165740 is an apocalyptic number.

245165740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245165740 is an abundant number, since it is smaller than the sum of its proper divisors (320362580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245165740 is a wasteful number, since it uses less digits than its factorization.

245165740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28102 (or 28100 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 245165740 is about 15657.7693174986. The cubic root of 245165740 is about 625.8735433065.

The spelling of 245165740 in words is "two hundred forty-five million, one hundred sixty-five thousand, seven hundred forty".