20456733 has 16 divisors (see below), whose sum is σ = 30177792. Its totient is φ = 12222000.

The previous prime is 20456713. The next prime is 20456747. The reversal of 20456733 is 33765402.

It is not a de Polignac number, because 20456733 - 2⁶ = 20456669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20456733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456713) 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 15 ways as a sum of consecutive naturals, for example, 2023 + ... + 6708.

It is an arithmetic number, because the mean of its divisors is an integer number (1886112).

Almost surely, 2^20456733 is an apocalyptic number.

It is an amenable number.

20456733 is a deficient number, since it is larger than the sum of its proper divisors (9721059).

20456733 is a wasteful number, since it uses less digits than its factorization.

20456733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 20456733 is about 4522.9120044502. The cubic root of 20456733 is about 273.4925028052.

It can be divided in two parts, 2045 and 6733, that added together give a palindrome (8778).

The spelling of 20456733 in words is "twenty million, four hundred fifty-six thousand, seven hundred thirty-three".