20937070 has 32 divisors (see below), whose sum is σ = 46987776. Its totient is φ = 6525600.

The previous prime is 20937041. The next prime is 20937071. The reversal of 20937070 is 7073902.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20937071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12826 + ... + 14365.

It is an arithmetic number, because the mean of its divisors is an integer number (1468368).

Almost surely, 2^20937070 is an apocalyptic number.

20937070 is an abundant number, since it is smaller than the sum of its proper divisors (26050706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20937070 is a wasteful number, since it uses less digits than its factorization.

20937070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27216.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 20937070 is about 4575.7043173702. The cubic root of 20937070 is about 275.6165560287.

The spelling of 20937070 in words is "twenty million, nine hundred thirty-seven thousand, seventy".