20620116 has 96 divisors (see below), whose sum is σ = 61810560. Its totient is φ = 5875200.

The previous prime is 20620109. The next prime is 20620123. The reversal of 20620116 is 61102602.

20620116 = T₃₇₃ + T₃₇₄ + ... + T₅₅₉.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20620109) and next prime (20620123).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19686 + ... + 20706.

It is an arithmetic number, because the mean of its divisors is an integer number (643860).

Almost surely, 2^20620116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20620116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30905280).

20620116 is an abundant number, since it is smaller than the sum of its proper divisors (41190444).

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

20620116 is a wasteful number, since it uses less digits than its factorization.

20620116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1054 counting only the distinct ones).

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

The square root of 20620116 is about 4540.9377886071. The cubic root of 20620116 is about 274.2186792096.

Adding to 20620116 its reverse (61102602), we get a palindrome (81722718).

It can be divided in two parts, 20620 and 116, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20620116 in words is "twenty million, six hundred twenty thousand, one hundred sixteen".