72062145 has 12 divisors (see below), whose sum is σ = 124907796. Its totient is φ = 38433120.

The previous prime is 72062131. The next prime is 72062153. The reversal of 72062145 is 54126027.

It can be written as a sum of positive squares in 2 ways, for example, as 56070144 + 15992001 = 7488^2 + 3999^2 .

It is not a de Polignac number, because 72062145 - 2⁵ = 72062113 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 800646 + ... + 800735.

It is an arithmetic number, because the mean of its divisors is an integer number (10408983).

Almost surely, 2^72062145 is an apocalyptic number.

It is an amenable number.

72062145 is a deficient number, since it is larger than the sum of its proper divisors (52845651).

72062145 is a wasteful number, since it uses less digits than its factorization.

72062145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601392 (or 1601389 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 72062145 is about 8488.9425136468. The cubic root of 72062145 is about 416.1364216806.

The spelling of 72062145 in words is "seventy-two million, sixty-two thousand, one hundred forty-five".