20014920 has 96 divisors (see below), whose sum is σ = 66339000. Its totient is φ = 5231616.

The previous prime is 20014913. The next prime is 20014949. The reversal of 20014920 is 2941002.

It can be written as a sum of positive squares in 4 ways, for example, as 19766916 + 248004 = 4446^2 + 498^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20014893 and 20014902.

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 23 ways as a sum of consecutive naturals, for example, 18556 + ... + 19604.

Almost surely, 2^20014920 is an apocalyptic number.

20014920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20014920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33169500).

20014920 is an abundant number, since it is smaller than the sum of its proper divisors (46324080).

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

20014920 is a wasteful number, since it uses less digits than its factorization.

20014920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20014920 is about 4473.8037507249. The cubic root of 20014920 is about 271.5092433999.

Adding to 20014920 its reverse (2941002), we get a palindrome (22955922).

The spelling of 20014920 in words is "twenty million, fourteen thousand, nine hundred twenty".