20345350 has 12 divisors (see below), whose sum is σ = 37842444. Its totient is φ = 8138120.

The previous prime is 20345293. The next prime is 20345357. The reversal of 20345350 is 5354302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203404 + ... + 203503.

It is an arithmetic number, because the mean of its divisors is an integer number (3153537).

Almost surely, 2^20345350 is an apocalyptic number.

20345350 is a deficient number, since it is larger than the sum of its proper divisors (17497094).

20345350 is a wasteful number, since it uses less digits than its factorization.

20345350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406919 (or 406914 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 20345350 is about 4510.5820023585. The cubic root of 20345350 is about 272.9952277250.

Adding to 20345350 its reverse (5354302), we get a palindrome (25699652).

The spelling of 20345350 in words is "twenty million, three hundred forty-five thousand, three hundred fifty".