20413570 has 16 divisors (see below), whose sum is σ = 37103040. Its totient is φ = 8085744.

The previous prime is 20413559. The next prime is 20413571. The reversal of 20413570 is 7531402.

It is not an unprimeable number, because it can be changed into a prime (20413571) 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 7 ways as a sum of consecutive naturals, for example, 8880 + ... + 10939.

It is an arithmetic number, because the mean of its divisors is an integer number (2318940).

Almost surely, 2^20413570 is an apocalyptic number.

20413570 is a deficient number, since it is larger than the sum of its proper divisors (16689470).

20413570 is a wasteful number, since it uses less digits than its factorization.

20413570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19929.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20413570 is about 4518.1378907687. The cubic root of 20413570 is about 273.3000141156.

Adding to 20413570 its reverse (7531402), we get a palindrome (27944972).

The spelling of 20413570 in words is "twenty million, four hundred thirteen thousand, five hundred seventy".