20723050 has 12 divisors (see below), whose sum is σ = 38544966. Its totient is φ = 8289200.

The previous prime is 20723047. The next prime is 20723063. The reversal of 20723050 is 5032702.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18826921 + 1896129 = 4339^2 + 1377^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 207181 + ... + 207280.

Almost surely, 2^20723050 is an apocalyptic number.

20723050 is a deficient number, since it is larger than the sum of its proper divisors (17821916).

20723050 is a wasteful number, since it uses less digits than its factorization.

20723050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414473 (or 414468 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 20723050 is about 4552.2576816345. The cubic root of 20723050 is about 274.6742147542.

Adding to 20723050 its reverse (5032702), we get a palindrome (25755752).

The spelling of 20723050 in words is "twenty million, seven hundred twenty-three thousand, fifty".