86840280428 has 30 divisors (see below), whose sum is σ = 167166614580. Its totient is φ = 39472828120.

The previous prime is 86840280409. The next prime is 86840280433. The reversal of 86840280428 is 82408204868.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 682850 + ... + 799977.

It is an arithmetic number, because the mean of its divisors is an integer number (5572220486).

Almost surely, 2^86840280428 is an apocalyptic number.

It is an amenable number.

86840280428 is a deficient number, since it is larger than the sum of its proper divisors (80326334152).

86840280428 is a wasteful number, since it uses less digits than its factorization.

86840280428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482875 (or 1482840 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 50.

The spelling of 86840280428 in words is "eighty-six billion, eight hundred forty million, two hundred eighty thousand, four hundred twenty-eight".