80573520 has 80 divisors (see below), whose sum is σ = 252073152. Its totient is φ = 21288960.

The previous prime is 80573503. The next prime is 80573543. The reversal of 80573520 is 2537508.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25635 + ... + 28605.

Almost surely, 2^80573520 is an apocalyptic number.

80573520 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 80573520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126036576).

80573520 is an abundant number, since it is smaller than the sum of its proper divisors (171499632).

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

80573520 is a wasteful number, since it uses less digits than its factorization.

80573520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 80573520 is about 8976.2753968447. The cubic root of 80573520 is about 431.9141633298.

The spelling of 80573520 in words is "eighty million, five hundred seventy-three thousand, five hundred twenty".