285007380 has 192 divisors, whose sum is σ = 975421440. Its totient is φ = 60696576.

The previous prime is 285007367. The next prime is 285007381. The reversal of 285007380 is 83700582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285007381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1277949 + ... + 1278171.

It is an arithmetic number, because the mean of its divisors is an integer number (5080320).

Almost surely, 2^285007380 is an apocalyptic number.

285007380 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 285007380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487710720).

285007380 is an abundant number, since it is smaller than the sum of its proper divisors (690414060).

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

285007380 is a wasteful number, since it uses less digits than its factorization.

285007380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 285007380 is about 16882.1615914550. The cubic root of 285007380 is about 658.0901167829.

The spelling of 285007380 in words is "two hundred eighty-five million, seven thousand, three hundred eighty".