20370730 has 8 divisors (see below), whose sum is σ = 36667332. Its totient is φ = 8148288.

The previous prime is 20370719. The next prime is 20370739. The reversal of 20370730 is 3707302.

It can be written as a sum of positive squares in 2 ways, for example, as 20349121 + 21609 = 4511^2 + 147^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20370739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018527 + ... + 1018546.

Almost surely, 2^20370730 is an apocalyptic number.

20370730 is a deficient number, since it is larger than the sum of its proper divisors (16296602).

20370730 is a wasteful number, since it uses less digits than its factorization.

20370730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037080.

The product of its (nonzero) digits is 882, while the sum is 22.

The square root of 20370730 is about 4513.3945096789. The cubic root of 20370730 is about 273.1086973846.

The spelling of 20370730 in words is "twenty million, three hundred seventy thousand, seven hundred thirty".