2009273730 has 32 divisors (see below), whose sum is σ = 4890181248. Its totient is φ = 528259200.

The previous prime is 2009273689. The next prime is 2009273737. The reversal of 2009273730 is 373729002.

It is a super-2 number, since 2×2009273730² = 8074361844136225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2009273691 and 2009273700.

It is not an unprimeable number, because it can be changed into a prime (2009273737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469531 + ... + 473790.

It is an arithmetic number, because the mean of its divisors is an integer number (152818164).

Almost surely, 2^2009273730 is an apocalyptic number.

2009273730 is an abundant number, since it is smaller than the sum of its proper divisors (2880907518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009273730 is a wasteful number, since it uses less digits than its factorization.

2009273730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943402.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 2009273730 is about 44824.9230897277. The cubic root of 2009273730 is about 1261.8654090138.

The spelling of 2009273730 in words is "two billion, nine million, two hundred seventy-three thousand, seven hundred thirty".