299978532 has 144 divisors (see below), whose sum is σ = 944872320. Its totient is φ = 80607744.

The previous prime is 299978531. The next prime is 299978533. The reversal of 299978532 is 235879992.

It is an interprime number because it is at equal distance from previous prime (299978531) and next prime (299978533).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (299978531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217798 + ... + 219170.

Almost surely, 2^299978532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 299978532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472436160).

299978532 is an abundant number, since it is smaller than the sum of its proper divisors (644893788).

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

299978532 is a wasteful number, since it uses less digits than its factorization.

299978532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1402 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 299978532 is about 17319.8883368225. Note that the first 3 decimals coincide. The cubic root of 299978532 is about 669.4169814940.

The spelling of 299978532 in words is "two hundred ninety-nine million, nine hundred seventy-eight thousand, five hundred thirty-two".