80782457 has 16 divisors (see below), whose sum is σ = 94483200. Its totient is φ = 67640832.

The previous prime is 80782439. The next prime is 80782459. The reversal of 80782457 is 75428708.

It is not a de Polignac number, because 80782457 - 2⁶ = 80782393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80782459) 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, 57044 + ... + 58442.

It is an arithmetic number, because the mean of its divisors is an integer number (5905200).

Almost surely, 2^80782457 is an apocalyptic number.

It is an amenable number.

80782457 is a deficient number, since it is larger than the sum of its proper divisors (13700743).

80782457 is a wasteful number, since it uses less digits than its factorization.

80782457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 80782457 is about 8987.9061521580. The cubic root of 80782457 is about 432.2871765238.

The spelling of 80782457 in words is "eighty million, seven hundred eighty-two thousand, four hundred fifty-seven".