7272021133 has 8 divisors (see below), whose sum is σ = 8292078648. Its totient is φ = 6317773824.

The previous prime is 7272021101. The next prime is 7272021157. The reversal of 7272021133 is 3311202727.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5822569 + 7266198564 = 2413^2 + 85242^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7272021133 - 2⁵ = 7272021101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272021173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16452316 + ... + 16452757.

It is an arithmetic number, because the mean of its divisors is an integer number (1036509831).

Almost surely, 2^7272021133 is an apocalyptic number.

It is an amenable number.

7272021133 is a deficient number, since it is larger than the sum of its proper divisors (1020057515).

7272021133 is a wasteful number, since it uses less digits than its factorization.

7272021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32905103.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 7272021133 is about 85276.1463306123. The cubic root of 7272021133 is about 1937.3959049340.

The spelling of 7272021133 in words is "seven billion, two hundred seventy-two million, twenty-one thousand, one hundred thirty-three".