299785040 has 80 divisors (see below), whose sum is σ = 738702720. Its totient is φ = 112826880.

The previous prime is 299785039. The next prime is 299785043. The reversal of 299785040 is 40587992.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 299784982 and 299785000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299785043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253250 + ... + 254430.

It is an arithmetic number, because the mean of its divisors is an integer number (9233784).

Almost surely, 2^299785040 is an apocalyptic number.

299785040 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 299785040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369351360).

299785040 is an abundant number, since it is smaller than the sum of its proper divisors (438917680).

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

299785040 is a wasteful number, since it uses less digits than its factorization.

299785040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 299785040 is about 17314.3016030102. The cubic root of 299785040 is about 669.2730215370.

The spelling of 299785040 in words is "two hundred ninety-nine million, seven hundred eighty-five thousand, forty".