80574840 has 192 divisors, whose sum is σ = 275970240. Its totient is φ = 20367360.

The previous prime is 80574829. The next prime is 80574841. The reversal of 80574840 is 4847508.

80574840 is a `hidden beast` number, since 8 + 0 + 574 + 84 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 80574795 and 80574804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80574841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 782229 + ... + 782331.

It is an arithmetic number, because the mean of its divisors is an integer number (1437345).

Almost surely, 2^80574840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80574840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137985120).

80574840 is an abundant number, since it is smaller than the sum of its proper divisors (195395400).

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

80574840 is a wasteful number, since it uses less digits than its factorization.

80574840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 80574840 is about 8976.3489236994. The cubic root of 80574840 is about 431.9165219359.

The spelling of 80574840 in words is "eighty million, five hundred seventy-four thousand, eight hundred forty".