20045750 has 32 divisors (see below), whose sum is σ = 37818144. Its totient is φ = 7956000.

The previous prime is 20045717. The next prime is 20045777. The reversal of 20045750 is 5754002.

It is a congruent number.

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, 45029 + ... + 45471.

It is an arithmetic number, because the mean of its divisors is an integer number (1181817).

Almost surely, 2^20045750 is an apocalyptic number.

20045750 is a deficient number, since it is larger than the sum of its proper divisors (17772394).

20045750 is a wasteful number, since it uses less digits than its factorization.

20045750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20045750 is about 4477.2480386952. The cubic root of 20045750 is about 271.6485783851.

Adding to 20045750 its reverse (5754002), we get a palindrome (25799752).

The spelling of 20045750 in words is "twenty million, forty-five thousand, seven hundred fifty".