86920144 has 20 divisors (see below), whose sum is σ = 168801696. Its totient is φ = 43358432.

The previous prime is 86920129. The next prime is 86920147. The reversal of 86920144 is 44102968.

It is a super-2 number, since 2×86920144² = 15110222865961472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86920147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957 + ... + 13219.

Almost surely, 2^86920144 is an apocalyptic number.

It is an amenable number.

86920144 is a deficient number, since it is larger than the sum of its proper divisors (81881552).

86920144 is a wasteful number, since it uses less digits than its factorization.

86920144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714 (or 12708 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 86920144 is about 9323.0973394039. The cubic root of 86920144 is about 442.9691475880.

Adding to 86920144 its product of nonzero digits (13824), we get a palindrome (86933968).

The spelling of 86920144 in words is "eighty-six million, nine hundred twenty thousand, one hundred forty-four".