245489280 has 64 divisors (see below), whose sum is σ = 782503200. Its totient is φ = 65463296.

The previous prime is 245489267. The next prime is 245489359. The reversal of 245489280 is 82984542.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62010 + ... + 65849.

Almost surely, 2^245489280 is an apocalyptic number.

245489280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245489280 is an abundant number, since it is smaller than the sum of its proper divisors (537013920).

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

245489280 is a wasteful number, since it uses less digits than its factorization.

245489280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127881 (or 127869 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 245489280 is about 15668.0975233115. The cubic root of 245489280 is about 626.1487396088.

The spelling of 245489280 in words is "two hundred forty-five million, four hundred eighty-nine thousand, two hundred eighty".