20446398 has 32 divisors (see below), whose sum is σ = 51928320. Its totient is φ = 5841720.

The previous prime is 20446397. The next prime is 20446399. The reversal of 20446398 is 89364402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20446397) and next prime (20446399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26668 + ... + 27423.

It is an arithmetic number, because the mean of its divisors is an integer number (1622760).

Almost surely, 2^20446398 is an apocalyptic number.

20446398 is an abundant number, since it is smaller than the sum of its proper divisors (31481922).

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

20446398 is a wasteful number, since it uses less digits than its factorization.

20446398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54109 (or 54103 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20446398 is about 4521.7693439626. The cubic root of 20446398 is about 273.4464377574.

The spelling of 20446398 in words is "twenty million, four hundred forty-six thousand, three hundred ninety-eight".