85722230 has 32 divisors (see below), whose sum is σ = 169011360. Its totient is φ = 31045120.

The previous prime is 85722199. The next prime is 85722239. The reversal of 85722230 is 3222758.

It is a junction number, because it is equal to n+sod(n) for n = 85722193 and 85722202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85722239) by changing a digit.

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, 28142 + ... + 31038.

It is an arithmetic number, because the mean of its divisors is an integer number (5281605).

Almost surely, 2^85722230 is an apocalyptic number.

85722230 is a deficient number, since it is larger than the sum of its proper divisors (83289130).

85722230 is a wasteful number, since it uses less digits than its factorization.

85722230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 85722230 is about 9258.6300282493. The cubic root of 85722230 is about 440.9247595922.

Adding to 85722230 its reverse (3222758), we get a palindrome (88944988).

It can be divided in two parts, 85722 and 230, that multiplied together give a triangular number (19716060 = T₆₂₇₉).

The spelling of 85722230 in words is "eighty-five million, seven hundred twenty-two thousand, two hundred thirty".