80412636 has 72 divisors (see below), whose sum is σ = 204637440. Its totient is φ = 24507360.

The previous prime is 80412583. The next prime is 80412637. The reversal of 80412636 is 63621408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80412637) 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, 218925 + ... + 219291.

Almost surely, 2^80412636 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 80412636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102318720).

80412636 is an abundant number, since it is smaller than the sum of its proper divisors (124224804).

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

80412636 is a wasteful number, since it uses less digits than its factorization.

80412636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 80412636 is about 8967.3092954353. The cubic root of 80412636 is about 431.6264990145.

The spelling of 80412636 in words is "eighty million, four hundred twelve thousand, six hundred thirty-six".