8180428 has 12 divisors (see below), whose sum is σ = 14419720. Its totient is φ = 4060512.

The previous prime is 8180423. The next prime is 8180429. The reversal of 8180428 is 8240818.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8180428.

It is not an unprimeable number, because it can be changed into a prime (8180423) 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, 6801 + ... + 7912.

Almost surely, 2^8180428 is an apocalyptic number.

It is an amenable number.

8180428 is a deficient number, since it is larger than the sum of its proper divisors (6239292).

8180428 is a wasteful number, since it uses less digits than its factorization.

8180428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14856 (or 14854 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 8180428 is about 2860.1447515816. The cubic root of 8180428 is about 201.4924026387.

The spelling of 8180428 in words is "eight million, one hundred eighty thousand, four hundred twenty-eight".