1601222272 has 48 divisors (see below), whose sum is σ = 3454236630. Its totient is φ = 739015680.

The previous prime is 1601222267. The next prime is 1601222281. The reversal of 1601222272 is 2722221061.

It can be written as a sum of positive squares in 3 ways, for example, as 636250176 + 964972096 = 25224^2 + 31064^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15379 + ... + 58642.

Almost surely, 2^1601222272 is an apocalyptic number.

It is an amenable number.

1601222272 is an abundant number, since it is smaller than the sum of its proper divisors (1853014358).

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

1601222272 is an equidigital number, since it uses as much as digits as its factorization.

1601222272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74061 (or 74036 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1601222272 is about 40015.2754832451. The cubic root of 1601222272 is about 1169.9048482289.

The spelling of 1601222272 in words is "one billion, six hundred one million, two hundred twenty-two thousand, two hundred seventy-two".