245489784 has 16 divisors (see below), whose sum is σ = 613724520. Its totient is φ = 81829920.

The previous prime is 245489767. The next prime is 245489807. The reversal of 245489784 is 487984542.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5114347 + ... + 5114394.

Almost surely, 2^245489784 is an apocalyptic number.

245489784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

245489784 is an abundant number, since it is smaller than the sum of its proper divisors (368234736).

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

245489784 is a wasteful number, since it uses less digits than its factorization.

245489784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228750 (or 10228746 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The square root of 245489784 is about 15668.1136069407. The cubic root of 245489784 is about 626.1491681119.

The spelling of 245489784 in words is "two hundred forty-five million, four hundred eighty-nine thousand, seven hundred eighty-four".