20944458 has 12 divisors (see below), whose sum is σ = 45379698. Its totient is φ = 6981480.

The previous prime is 20944453. The next prime is 20944463. The reversal of 20944458 is 85444902.

20944458 is a `hidden beast` number, since 209 + 4 + 445 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20944453) and next prime (20944463).

It can be written as a sum of positive squares in only one way, i.e., 13638249 + 7306209 = 3693^2 + 2703^2 .

It is not an unprimeable number, because it can be changed into a prime (20944453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 581773 + ... + 581808.

Almost surely, 2^20944458 is an apocalyptic number.

20944458 is an abundant number, since it is smaller than the sum of its proper divisors (24435240).

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

20944458 is a wasteful number, since it uses less digits than its factorization.

20944458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163589 (or 1163586 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 20944458 is about 4576.5115535744. The cubic root of 20944458 is about 275.6489708740.

The spelling of 20944458 in words is "twenty million, nine hundred forty-four thousand, four hundred fifty-eight".