20070638 has 16 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 8585016.

The previous prime is 20070601. The next prime is 20070691. The reversal of 20070638 is 83607002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8513 + ... + 10611.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^20070638 is an apocalyptic number.

20070638 is a deficient number, since it is larger than the sum of its proper divisors (14402962).

20070638 is a wasteful number, since it uses less digits than its factorization.

20070638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20070638 is about 4480.0265624213. The cubic root of 20070638 is about 271.7609545541.

The spelling of 20070638 in words is "twenty million, seventy thousand, six hundred thirty-eight".