72881245 has 16 divisors (see below), whose sum is σ = 92442240. Its totient is φ = 55007424.

The previous prime is 72881233. The next prime is 72881309. The reversal of 72881245 is 54218827.

It is a cyclic number.

It is not a de Polignac number, because 72881245 - 2⁷ = 72881117 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 23527 + ... + 26443.

It is an arithmetic number, because the mean of its divisors is an integer number (5777640).

Almost surely, 2^72881245 is an apocalyptic number.

It is an amenable number.

72881245 is a deficient number, since it is larger than the sum of its proper divisors (19560995).

72881245 is a wasteful number, since it uses less digits than its factorization.

72881245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204.

The product of its digits is 35840, while the sum is 37.

The square root of 72881245 is about 8537.0513059252. The cubic root of 72881245 is about 417.7071676733.

The spelling of 72881245 in words is "seventy-two million, eight hundred eighty-one thousand, two hundred forty-five".