85628578 has 16 divisors (see below), whose sum is σ = 149788800. Its totient is φ = 36697668.

The previous prime is 85628551. The next prime is 85628579. The reversal of 85628578 is 87582658.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (85628579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61726 + ... + 63097.

It is an arithmetic number, because the mean of its divisors is an integer number (9361800).

Almost surely, 2^85628578 is an apocalyptic number.

85628578 is a deficient number, since it is larger than the sum of its proper divisors (64160222).

85628578 is a wasteful number, since it uses less digits than its factorization.

85628578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124846 (or 124832 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The square root of 85628578 is about 9253.5710944478. The cubic root of 85628578 is about 440.7641301868.

The spelling of 85628578 in words is "eighty-five million, six hundred twenty-eight thousand, five hundred seventy-eight".