20914633 has 8 divisors (see below), whose sum is σ = 21510216. Its totient is φ = 20323200.

The previous prime is 20914627. The next prime is 20914637. The reversal of 20914633 is 33641902.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 20912329 = 48^2 + 4573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20914633 - 2⁹ = 20914121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20914637) 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 7 ways as a sum of consecutive naturals, for example, 11143 + ... + 12883.

It is an arithmetic number, because the mean of its divisors is an integer number (2688777).

Almost surely, 2^20914633 is an apocalyptic number.

It is an amenable number.

20914633 is a deficient number, since it is larger than the sum of its proper divisors (595583).

20914633 is a wasteful number, since it uses less digits than its factorization.

20914633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20914633 is about 4573.2519064666. The cubic root of 20914633 is about 275.5180669375.

It can be divided in two parts, 2091 and 4633, that added together give a square (6724 = 82²).

The spelling of 20914633 in words is "twenty million, nine hundred fourteen thousand, six hundred thirty-three".