72020570 has 8 divisors (see below), whose sum is σ = 129637044. Its totient is φ = 28808224.

The previous prime is 72020569. The next prime is 72020579. The reversal of 72020570 is 7502027.

It can be written as a sum of positive squares in 2 ways, for example, as 61952641 + 10067929 = 7871^2 + 3173^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72020579) 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, 3601019 + ... + 3601038.

Almost surely, 2^72020570 is an apocalyptic number.

72020570 is a deficient number, since it is larger than the sum of its proper divisors (57616474).

72020570 is a wasteful number, since it uses less digits than its factorization.

72020570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202064.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 72020570 is about 8486.4933865525. The cubic root of 72020570 is about 416.0563787309.

Adding to 72020570 its reverse (7502027), we get a palindrome (79522597).

The spelling of 72020570 in words is "seventy-two million, twenty thousand, five hundred seventy".