72020089 has 4 divisors (see below), whose sum is σ = 75810640. Its totient is φ = 68229540.

The previous prime is 72020087. The next prime is 72020101. The reversal of 72020089 is 98002027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72020089 - 2¹ = 72020087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72020087) 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 3 ways as a sum of consecutive naturals, for example, 1895247 + ... + 1895284.

It is an arithmetic number, because the mean of its divisors is an integer number (18952660).

Almost surely, 2^72020089 is an apocalyptic number.

It is an amenable number.

72020089 is a deficient number, since it is larger than the sum of its proper divisors (3790551).

72020089 is a wasteful number, since it uses less digits than its factorization.

72020089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790550.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 72020089 is about 8486.4650473563. The cubic root of 72020089 is about 416.0554524976.

The spelling of 72020089 in words is "seventy-two million, twenty thousand, eighty-nine".