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20746244 = 2224121521
BaseRepresentation
bin100111100100…
…1000000000100
31110001000111102
41033021000010
520302334434
62020355232
7341224451
oct117110004
943030442
1020746244
111078aa62
126b45b18
1343b4cac
142a80828
151c4c07e
hex13c9004

20746244 has 12 divisors (see below), whose sum is σ = 36458268. Its totient is φ = 10329600.

The previous prime is 20746241. The next prime is 20746247. The reversal of 20746244 is 44264702.

It is an interprime number because it is at equal distance from previous prime (20746241) and next prime (20746247).

It can be written as a sum of positive squares in 2 ways, for example, as 13249600 + 7496644 = 3640^2 + 2738^2 .

It is not an unprimeable number, because it can be changed into a prime (20746241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9797 + ... + 11724.

It is an arithmetic number, because the mean of its divisors is an integer number (3038189).

Almost surely, 220746244 is an apocalyptic number.

It is an amenable number.

20746244 is a deficient number, since it is larger than the sum of its proper divisors (15712024).

20746244 is a wasteful number, since it uses less digits than its factorization.

20746244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21766 (or 21764 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 20746244 is about 4554.8044963533. The cubic root of 20746244 is about 274.7766517089.

The spelling of 20746244 in words is "twenty million, seven hundred forty-six thousand, two hundred forty-four".