285416780 has 24 divisors (see below), whose sum is σ = 653864400. Its totient is φ = 103787840.

The previous prime is 285416771. The next prime is 285416837. The reversal of 285416780 is 87614582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648455 + ... + 648894.

It is an arithmetic number, because the mean of its divisors is an integer number (27244350).

Almost surely, 2^285416780 is an apocalyptic number.

285416780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285416780 is an abundant number, since it is smaller than the sum of its proper divisors (368447620).

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

285416780 is a wasteful number, since it uses less digits than its factorization.

285416780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297369 (or 1297367 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 285416780 is about 16894.2824647867. The cubic root of 285416780 is about 658.4050714255.

The spelling of 285416780 in words is "two hundred eighty-five million, four hundred sixteen thousand, seven hundred eighty".