80428885 has 4 divisors (see below), whose sum is σ = 96514668. Its totient is φ = 64343104.

The previous prime is 80428879. The next prime is 80428897. The reversal of 80428885 is 58882408.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47458321 + 32970564 = 6889^2 + 5742^2 .

It is a cyclic number.

It is not a de Polignac number, because 80428885 - 2⁹ = 80428373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8042884 + ... + 8042893.

It is an arithmetic number, because the mean of its divisors is an integer number (24128667).

Almost surely, 2^80428885 is an apocalyptic number.

It is an amenable number.

80428885 is a deficient number, since it is larger than the sum of its proper divisors (16085783).

80428885 is a wasteful number, since it uses less digits than its factorization.

80428885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16085782.

The product of its (nonzero) digits is 163840, while the sum is 43.

The square root of 80428885 is about 8968.2152628045. The cubic root of 80428885 is about 431.6555700120.

The spelling of 80428885 in words is "eighty million, four hundred twenty-eight thousand, eight hundred eighty-five".