80749730 has 16 divisors (see below), whose sum is σ = 150038784. Its totient is φ = 31257840.

The previous prime is 80749667. The next prime is 80749733. The reversal of 80749730 is 3794708.

It is not an unprimeable number, because it can be changed into a prime (80749733) 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, 129932 + ... + 130551.

It is an arithmetic number, because the mean of its divisors is an integer number (9377424).

Almost surely, 2^80749730 is an apocalyptic number.

80749730 is a deficient number, since it is larger than the sum of its proper divisors (69289054).

80749730 is a wasteful number, since it uses less digits than its factorization.

80749730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260521.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 80749730 is about 8986.0853545913. The cubic root of 80749730 is about 432.2287918453.

The spelling of 80749730 in words is "eighty million, seven hundred forty-nine thousand, seven hundred thirty".