245404680 has 128 divisors (see below), whose sum is σ = 778982400. Its totient is φ = 61747200.

The previous prime is 245404669. The next prime is 245404693. The reversal of 245404680 is 86404542.

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, 151716 + ... + 153324.

It is an arithmetic number, because the mean of its divisors is an integer number (6085800).

Almost surely, 2^245404680 is an apocalyptic number.

245404680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245404680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389491200).

245404680 is an abundant number, since it is smaller than the sum of its proper divisors (533577720).

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

245404680 is a wasteful number, since it uses less digits than its factorization.

245404680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 245404680 is about 15665.3975372475. The cubic root of 245404680 is about 626.0768039903.

The spelling of 245404680 in words is "two hundred forty-five million, four hundred four thousand, six hundred eighty".