299540640 has 192 divisors, whose sum is σ = 1097349120. Its totient is φ = 67261440.

The previous prime is 299540627. The next prime is 299540653. The reversal of 299540640 is 46045992.

It is an interprime number because it is at equal distance from previous prime (299540627) and next prime (299540653).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 31 ways as a sum of consecutive naturals, for example, 197485 + ... + 198995.

It is an arithmetic number, because the mean of its divisors is an integer number (5715360).

Almost surely, 2^299540640 is an apocalyptic number.

299540640 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 299540640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548674560).

299540640 is an abundant number, since it is smaller than the sum of its proper divisors (797808480).

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

299540640 is a wasteful number, since it uses less digits than its factorization.

299540640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 299540640 is about 17307.2424146656. The cubic root of 299540640 is about 669.0910969632.

The spelling of 299540640 in words is "two hundred ninety-nine million, five hundred forty thousand, six hundred forty".