20308070 has 16 divisors (see below), whose sum is σ = 36918288. Its totient is φ = 8042400.

The previous prime is 20308061. The next prime is 20308073. The reversal of 20308070 is 7080302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20308073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9044 + ... + 11063.

It is an arithmetic number, because the mean of its divisors is an integer number (2307393).

Almost surely, 2^20308070 is an apocalyptic number.

20308070 is a deficient number, since it is larger than the sum of its proper divisors (16610218).

20308070 is a wasteful number, since it uses less digits than its factorization.

20308070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20308070 is about 4506.4476031571. The cubic root of 20308070 is about 272.8283839571.

Adding to 20308070 its reverse (7080302), we get a palindrome (27388372).

The spelling of 20308070 in words is "twenty million, three hundred eight thousand, seventy".