20444346 has 32 divisors (see below), whose sum is σ = 48928320. Its totient is φ = 6290352.

The previous prime is 20444341. The next prime is 20444351. The reversal of 20444346 is 64344402.

It is an interprime number because it is at equal distance from previous prime (20444341) and next prime (20444351).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20444341) 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, 13860 + ... + 15263.

It is an arithmetic number, because the mean of its divisors is an integer number (1529010).

Almost surely, 2^20444346 is an apocalyptic number.

20444346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20444346 is an abundant number, since it is smaller than the sum of its proper divisors (28483974).

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

20444346 is a wasteful number, since it uses less digits than its factorization.

20444346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29147 (or 29141 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 20444346 is about 4521.5424359393. The cubic root of 20444346 is about 273.4372897587.

Adding to 20444346 its reverse (64344402), we get a palindrome (84788748).

The spelling of 20444346 in words is "twenty million, four hundred forty-four thousand, three hundred forty-six".