20276961 has 16 divisors (see below), whose sum is σ = 28615680. Its totient is φ = 12745040.

The previous prime is 20276923. The next prime is 20276969. The reversal of 20276961 is 16967202.

It is a cyclic number.

It is not a de Polignac number, because 20276961 - 2¹¹ = 20274913 is a prime.

It is a super-2 number, since 2×20276961² = 822310294791042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20276969) 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, 2830 + ... + 6968.

It is an arithmetic number, because the mean of its divisors is an integer number (1788480).

Almost surely, 2^20276961 is an apocalyptic number.

It is an amenable number.

20276961 is a deficient number, since it is larger than the sum of its proper divisors (8338719).

20276961 is a wasteful number, since it uses less digits than its factorization.

20276961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20276961 is about 4502.9946702167. The cubic root of 20276961 is about 272.6890016702.

The spelling of 20276961 in words is "twenty million, two hundred seventy-six thousand, nine hundred sixty-one".