72748485 has 12 divisors (see below), whose sum is σ = 126097452. Its totient is φ = 38799168.

The previous prime is 72748483. The next prime is 72748499. The reversal of 72748485 is 58484727.

It can be written as a sum of positive squares in 2 ways, for example, as 30835809 + 41912676 = 5553^2 + 6474^2 .

It is not a de Polignac number, because 72748485 - 2¹ = 72748483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1616633 = 72748485 / (7 + 2 + 7 + 4 + 8 + 4 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72748485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72748483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808272 + ... + 808361.

It is an arithmetic number, because the mean of its divisors is an integer number (10508121).

Almost surely, 2^72748485 is an apocalyptic number.

It is an amenable number.

72748485 is a deficient number, since it is larger than the sum of its proper divisors (53348967).

72748485 is a wasteful number, since it uses less digits than its factorization.

72748485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616644 (or 1616641 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 72748485 is about 8529.2722432808. The cubic root of 72748485 is about 417.4533826301.

The spelling of 72748485 in words is "seventy-two million, seven hundred forty-eight thousand, four hundred eighty-five".