320136890 has 32 divisors (see below), whose sum is σ = 610355520. Its totient is φ = 120559104.

The previous prime is 320136889. The next prime is 320136917. The reversal of 320136890 is 98631023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25802 + ... + 36138.

It is an arithmetic number, because the mean of its divisors is an integer number (19073610).

Almost surely, 2^320136890 is an apocalyptic number.

320136890 is a deficient number, since it is larger than the sum of its proper divisors (290218630).

320136890 is a wasteful number, since it uses less digits than its factorization.

320136890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 320136890 is about 17892.3696027105. The cubic root of 320136890 is about 684.0878975195.

The spelling of 320136890 in words is "three hundred twenty million, one hundred thirty-six thousand, eight hundred ninety".