85722628 has 12 divisors (see below), whose sum is σ = 150971212. Its totient is φ = 42588000.

The previous prime is 85722613. The next prime is 85722667. The reversal of 85722628 is 82622758.

It can be written as a sum of positive squares in 2 ways, for example, as 19430464 + 66292164 = 4408^2 + 8142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67623 + ... + 68878.

Almost surely, 2^85722628 is an apocalyptic number.

It is an amenable number.

85722628 is a deficient number, since it is larger than the sum of its proper divisors (65248584).

85722628 is a wasteful number, since it uses less digits than its factorization.

85722628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136662 (or 136660 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 85722628 is about 9258.6515216850. The cubic root of 85722628 is about 440.9254419815.

The spelling of 85722628 in words is "eighty-five million, seven hundred twenty-two thousand, six hundred twenty-eight".