20020662 has 64 divisors (see below), whose sum is σ = 47770560. Its totient is φ = 6193152.

The previous prime is 20020633. The next prime is 20020673. The reversal of 20020662 is 26602002.

20020662 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 0 + 662 = 666.

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, 103638 + ... + 103830.

It is an arithmetic number, because the mean of its divisors is an integer number (746415).

Almost surely, 2^20020662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23885280).

20020662 is an abundant number, since it is smaller than the sum of its proper divisors (27749898).

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

20020662 is a wasteful number, since it uses less digits than its factorization.

20020662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20020662 is about 4474.4454404987. The cubic root of 20020662 is about 271.5352049828.

Adding to 20020662 its reverse (26602002), we get a palindrome (46622664).

The spelling of 20020662 in words is "twenty million, twenty thousand, six hundred sixty-two".