20076021 has 24 divisors (see below), whose sum is σ = 33313280. Its totient is φ = 11412576.

The previous prime is 20076013. The next prime is 20076041. The reversal of 20076021 is 12067002.

It is a happy number.

It is not a de Polignac number, because 20076021 - 2³ = 20076013 is a prime.

20076021 is a modest number, since divided by 6021 gives 2007 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20075985 and 20076003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20076041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13335 + ... + 14763.

Almost surely, 2^20076021 is an apocalyptic number.

20076021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20076021 is a deficient number, since it is larger than the sum of its proper divisors (13237259).

20076021 is a wasteful number, since it uses less digits than its factorization.

20076021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20076021 is about 4480.6272998320. The cubic root of 20076021 is about 271.7852480595.

The spelling of 20076021 in words is "twenty million, seventy-six thousand, twenty-one".