72827378 has 16 divisors (see below), whose sum is σ = 117789336. Its totient is φ = 33571200.

The previous prime is 72827333. The next prime is 72827383. The reversal of 72827378 is 87372827.

It can be written as a sum of positive squares in 4 ways, for example, as 8779369 + 64048009 = 2963^2 + 8003^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32750 + ... + 34902.

Almost surely, 2^72827378 is an apocalyptic number.

72827378 is a deficient number, since it is larger than the sum of its proper divisors (44961958).

72827378 is a wasteful number, since it uses less digits than its factorization.

72827378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its digits is 263424, while the sum is 44.

The square root of 72827378 is about 8533.8958278151. The cubic root of 72827378 is about 417.6042322851.

The spelling of 72827378 in words is "seventy-two million, eight hundred twenty-seven thousand, three hundred seventy-eight".