20748464 has 20 divisors (see below), whose sum is σ = 43855080. Its totient is φ = 9431040.

The previous prime is 20748463. The next prime is 20748467. The reversal of 20748464 is 46484702.

It is not an unprimeable number, because it can be changed into a prime (20748463) 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 3 ways as a sum of consecutive naturals, for example, 58769 + ... + 59120.

It is an arithmetic number, because the mean of its divisors is an integer number (2192754).

Almost surely, 2^20748464 is an apocalyptic number.

It is an amenable number.

20748464 is an abundant number, since it is smaller than the sum of its proper divisors (23106616).

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

20748464 is a wasteful number, since it uses less digits than its factorization.

20748464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117908 (or 117902 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 20748464 is about 4555.0481885486. The cubic root of 20748464 is about 274.7864523972.

It can be divided in two parts, 20748 and 464, that added together give a palindrome (21212).

The spelling of 20748464 in words is "twenty million, seven hundred forty-eight thousand, four hundred sixty-four".