20276533 has 4 divisors (see below), whose sum is σ = 20357568. Its totient is φ = 20195500.

The previous prime is 20276527. The next prime is 20276537. The reversal of 20276533 is 33567202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20276533 is a prime.

It is a super-3 number, since 3×20276533³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276537) 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 3 ways as a sum of consecutive naturals, for example, 40141 + ... + 40642.

It is an arithmetic number, because the mean of its divisors is an integer number (5089392).

Almost surely, 2^20276533 is an apocalyptic number.

It is an amenable number.

20276533 is a deficient number, since it is larger than the sum of its proper divisors (81035).

20276533 is an equidigital number, since it uses as much as digits as its factorization.

20276533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81034.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20276533 is about 4502.9471460367. The cubic root of 20276533 is about 272.6870830442.

The spelling of 20276533 in words is "twenty million, two hundred seventy-six thousand, five hundred thirty-three".