80405536 has 12 divisors (see below), whose sum is σ = 158298462. Its totient is φ = 40202752.

The previous prime is 80405519. The next prime is 80405569. The reversal of 80405536 is 63550408.

It can be written as a sum of positive squares in only one way, i.e., 60155536 + 20250000 = 7756^2 + 4500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80405498 and 80405507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256305 + ... + 1256368.

Almost surely, 2^80405536 is an apocalyptic number.

It is an amenable number.

80405536 is a deficient number, since it is larger than the sum of its proper divisors (77892926).

80405536 is a wasteful number, since it uses less digits than its factorization.

80405536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512683 (or 2512675 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 80405536 is about 8966.9134042880. The cubic root of 80405536 is about 431.6137952136.

The spelling of 80405536 in words is "eighty million, four hundred five thousand, five hundred thirty-six".