80417520 has 120 divisors (see below), whose sum is σ = 274646112. Its totient is φ = 21081600.

The previous prime is 80417501. The next prime is 80417521. The reversal of 80417520 is 2571408.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80417521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43005 + ... + 44835.

Almost surely, 2^80417520 is an apocalyptic number.

80417520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80417520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137323056).

80417520 is an abundant number, since it is smaller than the sum of its proper divisors (194228592).

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

80417520 is a wasteful number, since it uses less digits than its factorization.

80417520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1902 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 80417520 is about 8967.5816137909. The cubic root of 80417520 is about 431.6352373639.

Adding to 80417520 its reverse (2571408), we get a palindrome (82988928).

The spelling of 80417520 in words is "eighty million, four hundred seventeen thousand, five hundred twenty".