80412540 has 48 divisors (see below), whose sum is σ = 242477088. Its totient is φ = 19793664.

The previous prime is 80412523. The next prime is 80412547. The reversal of 80412540 is 4521408.

It is a self number, because there is not a number n which added to its sum of digits gives 80412540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80412547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50767 + ... + 52326.

It is an arithmetic number, because the mean of its divisors is an integer number (5051606).

Almost surely, 2^80412540 is an apocalyptic number.

It is an amenable number.

80412540 is an abundant number, since it is smaller than the sum of its proper divisors (162064548).

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

80412540 is a wasteful number, since it uses less digits than its factorization.

80412540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103118 (or 103116 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 80412540 is about 8967.3039426575. The cubic root of 80412540 is about 431.6263272498.

Adding to 80412540 its reverse (4521408), we get a palindrome (84933948).

The spelling of 80412540 in words is "eighty million, four hundred twelve thousand, five hundred forty".