20276705 has 16 divisors (see below), whose sum is σ = 26040000. Its totient is φ = 15111360.

The previous prime is 20276701. The next prime is 20276717. The reversal of 20276705 is 50767202.

It is a happy number.

It is not a de Polignac number, because 20276705 - 2² = 20276701 is a prime.

It is a super-2 number, since 2×20276705² = 822289531314050, which contains 22 as substring.

It is a Curzon 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4046 + ... + 7544.

It is an arithmetic number, because the mean of its divisors is an integer number (1627500).

Almost surely, 2^20276705 is an apocalyptic number.

It is an amenable number.

20276705 is a deficient number, since it is larger than the sum of its proper divisors (5763295).

20276705 is a wasteful number, since it uses less digits than its factorization.

20276705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20276705 is about 4502.9662445992. The cubic root of 20276705 is about 272.6878540840.

The spelling of 20276705 in words is "twenty million, two hundred seventy-six thousand, seven hundred five".