80417840 has 20 divisors (see below), whose sum is σ = 186971664. Its totient is φ = 32167104.

The previous prime is 80417807. The next prime is 80417849. The reversal of 80417840 is 4871408.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 80417797 and 80417806.

It is not an unprimeable number, because it can be changed into a prime (80417849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502532 + ... + 502691.

Almost surely, 2^80417840 is an apocalyptic number.

80417840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80417840 is an abundant number, since it is smaller than the sum of its proper divisors (106553824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80417840 is a wasteful number, since it uses less digits than its factorization.

80417840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005236 (or 1005230 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 80417840 is about 8967.5994558187. The cubic root of 80417840 is about 431.6358098888.

The spelling of 80417840 in words is "eighty million, four hundred seventeen thousand, eight hundred forty".