20744898 has 16 divisors (see below), whose sum is σ = 41808096. Its totient is φ = 6861920.

The previous prime is 20744897. The next prime is 20744923. The reversal of 20744898 is 89844702.

It is not an unprimeable number, because it can be changed into a prime (20744891) 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 7 ways as a sum of consecutive naturals, for example, 12411 + ... + 13982.

It is an arithmetic number, because the mean of its divisors is an integer number (2613006).

Almost surely, 2^20744898 is an apocalyptic number.

20744898 is an abundant number, since it is smaller than the sum of its proper divisors (21063198).

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

20744898 is a wasteful number, since it uses less digits than its factorization.

20744898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26529.

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

The square root of 20744898 is about 4554.6567378893. The cubic root of 20744898 is about 274.7707091494.

The spelling of 20744898 in words is "twenty million, seven hundred forty-four thousand, eight hundred ninety-eight".