85072738 has 8 divisors (see below), whose sum is σ = 130016988. Its totient is φ = 41733744.

The previous prime is 85072703. The next prime is 85072763. The reversal of 85072738 is 83727058.

It can be written as a sum of positive squares in 2 ways, for example, as 76090729 + 8982009 = 8723^2 + 2997^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 85072738.

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 3 ways as a sum of consecutive naturals, for example, 401181 + ... + 401392.

Almost surely, 2^85072738 is an apocalyptic number.

85072738 is a deficient number, since it is larger than the sum of its proper divisors (44944250).

85072738 is a wasteful number, since it uses less digits than its factorization.

85072738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802628.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 85072738 is about 9223.4883856380. The cubic root of 85072738 is about 439.8083497308.

The spelling of 85072738 in words is "eighty-five million, seventy-two thousand, seven hundred thirty-eight".