285080780 has 48 divisors (see below), whose sum is σ = 607733280. Its totient is φ = 112320000.

The previous prime is 285080777. The next prime is 285080797. The reversal of 285080780 is 87080582.

It is a super-2 number, since 2×285080780² = 162542102250816800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546920 + ... + 547440.

It is an arithmetic number, because the mean of its divisors is an integer number (12661110).

Almost surely, 2^285080780 is an apocalyptic number.

285080780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285080780 is an abundant number, since it is smaller than the sum of its proper divisors (322652500).

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

285080780 is a wasteful number, since it uses less digits than its factorization.

285080780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 285080780 is about 16884.3353437439. The cubic root of 285080780 is about 658.1466061604.

The spelling of 285080780 in words is "two hundred eighty-five million, eighty thousand, seven hundred eighty".