20006748 has 18 divisors (see below), whose sum is σ = 50572704. Its totient is φ = 6668904.

The previous prime is 20006743. The next prime is 20006797. The reversal of 20006748 is 84760002.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277836 + ... + 277907.

Almost surely, 2^20006748 is an apocalyptic number.

It is an amenable number.

20006748 is an abundant number, since it is smaller than the sum of its proper divisors (30565956).

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

20006748 is a wasteful number, since it uses less digits than its factorization.

20006748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555753 (or 555748 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20006748 is about 4472.8903407081. The cubic root of 20006748 is about 271.4722863769.

The spelling of 20006748 in words is "twenty million, six thousand, seven hundred forty-eight".