20944398 has 16 divisors (see below), whose sum is σ = 43710336. Its totient is φ = 6677880.

The previous prime is 20944393. The next prime is 20944453. The reversal of 20944398 is 89344902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20944393) 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, 75748 + ... + 76023.

It is an arithmetic number, because the mean of its divisors is an integer number (2731896).

Almost surely, 2^20944398 is an apocalyptic number.

20944398 is an abundant number, since it is smaller than the sum of its proper divisors (22765938).

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

20944398 is a wasteful number, since it uses less digits than its factorization.

20944398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151799.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 20944398 is about 4576.5049983585. The cubic root of 20944398 is about 275.6487076548.

The spelling of 20944398 in words is "twenty million, nine hundred forty-four thousand, three hundred ninety-eight".