80420428 has 12 divisors (see below), whose sum is σ = 153529992. Its totient is φ = 36554720.

The previous prime is 80420423. The next prime is 80420429. The reversal of 80420428 is 82402408.

It is a junction number, because it is equal to n+sod(n) for n = 80420396 and 80420405.

It is not an unprimeable number, because it can be changed into a prime (80420423) 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, 913825 + ... + 913912.

It is an arithmetic number, because the mean of its divisors is an integer number (12794166).

Almost surely, 2^80420428 is an apocalyptic number.

It is an amenable number.

80420428 is a deficient number, since it is larger than the sum of its proper divisors (73109564).

80420428 is a wasteful number, since it uses less digits than its factorization.

80420428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827752 (or 1827750 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 80420428 is about 8967.7437519144. The cubic root of 80420428 is about 431.6404401280.

The spelling of 80420428 in words is "eighty million, four hundred twenty thousand, four hundred twenty-eight".