20521314 has 24 divisors (see below), whose sum is σ = 48505392. Its totient is φ = 6218520.

The previous prime is 20521309. The next prime is 20521331. The reversal of 20521314 is 41312502.

It is a super-2 number, since 2×20521314² = 842248656573192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51624 + ... + 52019.

It is an arithmetic number, because the mean of its divisors is an integer number (2021058).

Almost surely, 2^20521314 is an apocalyptic number.

20521314 is an abundant number, since it is smaller than the sum of its proper divisors (27984078).

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

20521314 is a wasteful number, since it uses less digits than its factorization.

20521314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103662 (or 103659 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20521314 is about 4530.0456951338. The cubic root of 20521314 is about 273.7800017159.

Adding to 20521314 its reverse (41312502), we get a palindrome (61833816).

The spelling of 20521314 in words is "twenty million, five hundred twenty-one thousand, three hundred fourteen".