20898744 has 32 divisors (see below), whose sum is σ = 53136000. Its totient is φ = 6847712.

The previous prime is 20898737. The next prime is 20898749. The reversal of 20898744 is 44789802.

It is a junction number, because it is equal to n+sod(n) for n = 20898696 and 20898705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5964 + ... + 8795.

It is an arithmetic number, because the mean of its divisors is an integer number (1660500).

Almost surely, 2^20898744 is an apocalyptic number.

20898744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20898744 is an abundant number, since it is smaller than the sum of its proper divisors (32237256).

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

20898744 is a wasteful number, since it uses less digits than its factorization.

20898744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14827 (or 14823 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 20898744 is about 4571.5144099084. The cubic root of 20898744 is about 275.4482782298.

The spelling of 20898744 in words is "twenty million, eight hundred ninety-eight thousand, seven hundred forty-four".