85720226 has 4 divisors (see below), whose sum is σ = 128580342. Its totient is φ = 42860112.

The previous prime is 85720213. The next prime is 85720237. The reversal of 85720226 is 62202758.

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., 79192201 + 6528025 = 8899^2 + 2555^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85720192 and 85720201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21430055 + ... + 21430058.

Almost surely, 2^85720226 is an apocalyptic number.

85720226 is a deficient number, since it is larger than the sum of its proper divisors (42860116).

85720226 is a wasteful number, since it uses less digits than its factorization.

85720226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42860115.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 85720226 is about 9258.5218042623. The cubic root of 85720226 is about 440.9213236103.

The spelling of 85720226 in words is "eighty-five million, seven hundred twenty thousand, two hundred twenty-six".