80867520 has 168 divisors, whose sum is σ = 285055056. Its totient is φ = 21030912.

The previous prime is 80867491. The next prime is 80867557. The reversal of 80867520 is 2576808.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123514 + ... + 124166.

Almost surely, 2^80867520 is an apocalyptic number.

80867520 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 80867520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142527528).

80867520 is an abundant number, since it is smaller than the sum of its proper divisors (204187536).

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

80867520 is a wasteful number, since it uses less digits than its factorization.

80867520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 80867520 is about 8992.6369881142. The cubic root of 80867520 is about 432.4388544429.

The spelling of 80867520 in words is "eighty million, eight hundred sixty-seven thousand, five hundred twenty".