20071438 has 8 divisors (see below), whose sum is σ = 30204288. Its totient is φ = 10003344.

The previous prime is 20071417. The next prime is 20071481. The reversal of 20071438 is 83417002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15406 + ... + 16657.

It is an arithmetic number, because the mean of its divisors is an integer number (3775536).

Almost surely, 2^20071438 is an apocalyptic number.

20071438 is a deficient number, since it is larger than the sum of its proper divisors (10132850).

20071438 is a wasteful number, since it uses less digits than its factorization.

20071438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32378.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20071438 is about 4480.1158467165. The cubic root of 20071438 is about 271.7645652328.

The spelling of 20071438 in words is "twenty million, seventy-one thousand, four hundred thirty-eight".