80072770 has 16 divisors (see below), whose sum is σ = 149101560. Its totient is φ = 30924544.

The previous prime is 80072767. The next prime is 80072779. The reversal of 80072770 is 7727008.

It can be written as a sum of positive squares in 4 ways, for example, as 70543201 + 9529569 = 8399^2 + 3087^2 .

It is not an unprimeable number, because it can be changed into a prime (80072779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137767 + ... + 138346.

Almost surely, 2^80072770 is an apocalyptic number.

80072770 is a deficient number, since it is larger than the sum of its proper divisors (69028790).

80072770 is a wasteful number, since it uses less digits than its factorization.

80072770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276149.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 80072770 is about 8948.3389520067. The cubic root of 80072770 is about 431.0175469230.

Adding to 80072770 its reverse (7727008), we get a palindrome (87799778).

The spelling of 80072770 in words is "eighty million, seventy-two thousand, seven hundred seventy".