80782090 has 8 divisors (see below), whose sum is σ = 145407780. Its totient is φ = 32312832.

The previous prime is 80782069. The next prime is 80782133. The reversal of 80782090 is 9028708.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72880369 + 7901721 = 8537^2 + 2811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039095 + ... + 4039114.

Almost surely, 2^80782090 is an apocalyptic number.

80782090 is a deficient number, since it is larger than the sum of its proper divisors (64625690).

80782090 is a wasteful number, since it uses less digits than its factorization.

80782090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078216.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 80782090 is about 8987.8857358113. The cubic root of 80782090 is about 432.2865218865.

The spelling of 80782090 in words is "eighty million, seven hundred eighty-two thousand, ninety".