72851026 has 4 divisors (see below), whose sum is σ = 109276542. Its totient is φ = 36425512.

The previous prime is 72851011. The next prime is 72851027. The reversal of 72851026 is 62015827.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59521225 + 13329801 = 7715^2 + 3651^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (72851027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18212755 + ... + 18212758.

Almost surely, 2^72851026 is an apocalyptic number.

72851026 is a deficient number, since it is larger than the sum of its proper divisors (36425516).

72851026 is a wasteful number, since it uses less digits than its factorization.

72851026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36425515.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 72851026 is about 8535.2812490275. The cubic root of 72851026 is about 417.6494279082.

The spelling of 72851026 in words is "seventy-two million, eight hundred fifty-one thousand, twenty-six".