72045250 has 16 divisors (see below), whose sum is σ = 134869176. Its totient is φ = 28818000.

The previous prime is 72045227. The next prime is 72045289. The reversal of 72045250 is 5254027.

It can be written as a sum of positive squares in 4 ways, for example, as 41563809 + 30481441 = 6447^2 + 5521^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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 7 ways as a sum of consecutive naturals, for example, 143841 + ... + 144340.

Almost surely, 2^72045250 is an apocalyptic number.

72045250 is a deficient number, since it is larger than the sum of its proper divisors (62823926).

72045250 is a wasteful number, since it uses less digits than its factorization.

72045250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288198 (or 288188 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 72045250 is about 8487.9473372542. The cubic root of 72045250 is about 416.1038980195.

Adding to 72045250 its reverse (5254027), we get a palindrome (77299277).

The spelling of 72045250 in words is "seventy-two million, forty-five thousand, two hundred fifty".