80967840 has 192 divisors, whose sum is σ = 270273024. Its totient is φ = 20348928.

The previous prime is 80967829. The next prime is 80967847. The reversal of 80967840 is 4876908.

It is a happy number.

It is a super-2 number, since 2×80967840² = 13111582228531200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80967792 and 80967801.

It is not an unprimeable number, because it can be changed into a prime (80967847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834672 + ... + 834768.

It is an arithmetic number, because the mean of its divisors is an integer number (1407672).

Almost surely, 2^80967840 is an apocalyptic number.

80967840 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 80967840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135136512).

80967840 is an abundant number, since it is smaller than the sum of its proper divisors (189305184).

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

80967840 is a wasteful number, since it uses less digits than its factorization.

80967840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 80967840 is about 8998.2131559549. The cubic root of 80967840 is about 432.6176008625.

The spelling of 80967840 in words is "eighty million, nine hundred sixty-seven thousand, eight hundred forty".