80392745 has 16 divisors (see below), whose sum is σ = 102685968. Its totient is φ = 60211200.

The previous prime is 80392729. The next prime is 80392747. The reversal of 80392745 is 54729308.

It can be written as a sum of positive squares in 8 ways, for example, as 14409616 + 65983129 = 3796^2 + 8123^2 .

It is not a de Polignac number, because 80392745 - 2⁴ = 80392729 is a prime.

It is a super-3 number, since 3×80392745³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80392699 and 80392708.

It is not an unprimeable number, because it can be changed into a prime (80392747) 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, 14345 + ... + 19145.

It is an arithmetic number, because the mean of its divisors is an integer number (6417873).

Almost surely, 2^80392745 is an apocalyptic number.

80392745 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80392745 is a deficient number, since it is larger than the sum of its proper divisors (22293223).

80392745 is a wasteful number, since it uses less digits than its factorization.

80392745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 80392745 is about 8966.2001427584. The cubic root of 80392745 is about 431.5909068028.

The spelling of 80392745 in words is "eighty million, three hundred ninety-two thousand, seven hundred forty-five".