20071356 has 24 divisors (see below), whose sum is σ = 49588560. Its totient is φ = 6296832.

The previous prime is 20071333. The next prime is 20071361. The reversal of 20071356 is 65317002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48991 + ... + 49398.

It is an arithmetic number, because the mean of its divisors is an integer number (2066190).

Almost surely, 2^20071356 is an apocalyptic number.

It is an amenable number.

20071356 is an abundant number, since it is smaller than the sum of its proper divisors (29517204).

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

20071356 is a wasteful number, since it uses less digits than its factorization.

20071356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98413 (or 98411 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20071356 is about 4480.1066951581. The cubic root of 20071356 is about 271.7641951427.

Adding to 20071356 its reverse (65317002), we get a palindrome (85388358).

The spelling of 20071356 in words is "twenty million, seventy-one thousand, three hundred fifty-six".