80780293 has 4 divisors (see below), whose sum is σ = 88123968. Its totient is φ = 73436620.

The previous prime is 80780281. The next prime is 80780299. The reversal of 80780293 is 39208708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80780293 - 2⁵ = 80780261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80780299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3671821 + ... + 3671842.

It is an arithmetic number, because the mean of its divisors is an integer number (22030992).

Almost surely, 2^80780293 is an apocalyptic number.

It is an amenable number.

80780293 is a deficient number, since it is larger than the sum of its proper divisors (7343675).

80780293 is a wasteful number, since it uses less digits than its factorization.

80780293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7343674.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 80780293 is about 8987.7857673623. The cubic root of 80780293 is about 432.2833164539.

The spelling of 80780293 in words is "eighty million, seven hundred eighty thousand, two hundred ninety-three".