86628394 has 16 divisors (see below), whose sum is σ = 136964520. Its totient is φ = 41030080.

The previous prime is 86628389. The next prime is 86628397. The reversal of 86628394 is 49382668.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 86583025 + 45369 = 9305^2 + 213^2 .

It is not an unprimeable number, because it can be changed into a prime (86628397) 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, 11017 + ... + 17164.

Almost surely, 2^86628394 is an apocalyptic number.

86628394 is a deficient number, since it is larger than the sum of its proper divisors (50336126).

86628394 is a wasteful number, since it uses less digits than its factorization.

86628394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28265.

The product of its digits is 497664, while the sum is 46.

The square root of 86628394 is about 9307.4375635832. The cubic root of 86628394 is about 442.4729790814.

The spelling of 86628394 in words is "eighty-six million, six hundred twenty-eight thousand, three hundred ninety-four".