20465738 has 8 divisors (see below), whose sum is σ = 31277988. Its totient is φ = 10039744.

The previous prime is 20465729. The next prime is 20465749. The reversal of 20465738 is 83756402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20097289 + 368449 = 4483^2 + 607^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20465698 and 20465707.

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, 96431 + ... + 96642.

Almost surely, 2^20465738 is an apocalyptic number.

20465738 is a deficient number, since it is larger than the sum of its proper divisors (10812250).

20465738 is a wasteful number, since it uses less digits than its factorization.

20465738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193128.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 20465738 is about 4523.9073818990. The cubic root of 20465738 is about 273.5326271448.

The spelling of 20465738 in words is "twenty million, four hundred sixty-five thousand, seven hundred thirty-eight".