1172998272 has 64 divisors (see below), whose sum is σ = 3200025600. Its totient is φ = 380427264.

The previous prime is 1172998271. The next prime is 1172998273. The reversal of 1172998272 is 2728992711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1172998271) and next prime (1172998273).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1172998272² = 2751849892229971968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1172998271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27072 + ... + 55487.

It is an arithmetic number, because the mean of its divisors is an integer number (50000400).

Almost surely, 2^1172998272 is an apocalyptic number.

1172998272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1172998272 is an abundant number, since it is smaller than the sum of its proper divisors (2027027328).

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

1172998272 is an equidigital number, since it uses as much as digits as its factorization.

1172998272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82613 (or 82601 counting only the distinct ones).

The product of its digits is 254016, while the sum is 48.

The square root of 1172998272 is about 34249.0623521287. The cubic root of 1172998272 is about 1054.6275789176.

The spelling of 1172998272 in words is "one billion, one hundred seventy-two million, nine hundred ninety-eight thousand, two hundred seventy-two".