20943748 has 12 divisors (see below), whose sum is σ = 41887552. Its totient is φ = 8975880.

The previous prime is 20943737. The next prime is 20943749. The reversal of 20943748 is 84734902.

It is a happy number.

20943748 is an admirable number.

It is a super-3 number, since 3×20943748³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20943749) 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, 373968 + ... + 374023.

Almost surely, 2^20943748 is an apocalyptic number.

20943748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20943748 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20943748 is a wasteful number, since it uses less digits than its factorization.

20943748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748002 (or 748000 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 20943748 is about 4576.4339829173. The cubic root of 20943748 is about 275.6458560806.

The spelling of 20943748 in words is "twenty million, nine hundred forty-three thousand, seven hundred forty-eight".