20276001 has 20 divisors (see below), whose sum is σ = 30469252. Its totient is φ = 13436928.

The previous prime is 20275991. The next prime is 20276023. The reversal of 20276001 is 10067202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14630625 + 5645376 = 3825^2 + 2376^2 .

It is not a de Polignac number, because 20276001 - 2⁷ = 20275873 is a prime.

It is a super-2 number, since 2×20276001² = 822232433104002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20276701) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 14985 + ... + 16281.

Almost surely, 2^20276001 is an apocalyptic number.

It is an amenable number.

20276001 is a deficient number, since it is larger than the sum of its proper divisors (10193251).

20276001 is a wasteful number, since it uses less digits than its factorization.

20276001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502 (or 1493 counting only the distinct ones).

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

The square root of 20276001 is about 4502.8880732259. Note that the first 3 decimals coincide. The cubic root of 20276001 is about 272.6846981724.

The spelling of 20276001 in words is "twenty million, two hundred seventy-six thousand, one".