20380070 has 16 divisors (see below), whose sum is σ = 38279520. Its totient is φ = 7797504.

The previous prime is 20380049. The next prime is 20380079. The reversal of 20380070 is 7008302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380079) 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, 44075 + ... + 44534.

It is an arithmetic number, because the mean of its divisors is an integer number (2392470).

Almost surely, 2^20380070 is an apocalyptic number.

20380070 is a deficient number, since it is larger than the sum of its proper divisors (17899450).

20380070 is a wasteful number, since it uses less digits than its factorization.

20380070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88639.

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

The square root of 20380070 is about 4514.4290890433. The cubic root of 20380070 is about 273.1504312102.

Adding to 20380070 its reverse (7008302), we get a palindrome (27388372).

The spelling of 20380070 in words is "twenty million, three hundred eighty thousand, seventy".