999003886272 has 336 divisors, whose sum is σ = 3396182549760. Its totient is φ = 285223928832.

The previous prime is 999003886253. The next prime is 999003886273. The reversal of 999003886272 is 272688300999.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×999003886272² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (999003886273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215439538 + ... + 215444174.

It is an arithmetic number, because the mean of its divisors is an integer number (10107686160).

Almost surely, 2^999003886272 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 999003886272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698091274880).

999003886272 is an abundant number, since it is smaller than the sum of its proper divisors (2397178663488).

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

999003886272 is a wasteful number, since it uses less digits than its factorization.

999003886272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650 (or 6628 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 999003886272 in words is "nine hundred ninety-nine billion, three million, eight hundred eighty-six thousand, two hundred seventy-two".