72457162 has 8 divisors (see below), whose sum is σ = 115079076. Its totient is φ = 34097472.

The previous prime is 72457159. The next prime is 72457169. The reversal of 72457162 is 26175427.

It can be written as a sum of positive squares in 2 ways, for example, as 56385081 + 16072081 = 7509^2 + 4009^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 2131093 = 72457162 / (7 + 2 + 4 + 5 + 7 + 1 + 6 + 2).

It is not an unprimeable number, because it can be changed into a prime (72457169) 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, 1065513 + ... + 1065580.

Almost surely, 2^72457162 is an apocalyptic number.

72457162 is a deficient number, since it is larger than the sum of its proper divisors (42621914).

72457162 is a wasteful number, since it uses less digits than its factorization.

72457162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131112.

The product of its digits is 23520, while the sum is 34.

The square root of 72457162 is about 8512.1772772893. The cubic root of 72457162 is about 416.8954032258.

The spelling of 72457162 in words is "seventy-two million, four hundred fifty-seven thousand, one hundred sixty-two".