245755720 has 32 divisors (see below), whose sum is σ = 631944000. Its totient is φ = 84259008.

The previous prime is 245755691. The next prime is 245755771. The reversal of 245755720 is 27557542.

It is a self number, because there is not a number n which added to its sum of digits gives 245755720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438570 + ... + 439129.

It is an arithmetic number, because the mean of its divisors is an integer number (19748250).

Almost surely, 2^245755720 is an apocalyptic number.

245755720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245755720 is an abundant number, since it is smaller than the sum of its proper divisors (386188280).

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

245755720 is a wasteful number, since it uses less digits than its factorization.

245755720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877717 (or 877713 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 245755720 is about 15676.5978451959. The cubic root of 245755720 is about 626.3751863607.

The spelling of 245755720 in words is "two hundred forty-five million, seven hundred fifty-five thousand, seven hundred twenty".