20444650 has 24 divisors (see below), whose sum is σ = 38958444. Its totient is φ = 7977600.

The previous prime is 20444639. The next prime is 20444689. The reversal of 20444650 is 5644402.

It can be written as a sum of positive squares in 6 ways, for example, as 436921 + 20007729 = 661^2 + 4473^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2937 + ... + 7036.

Almost surely, 2^20444650 is an apocalyptic number.

20444650 is a deficient number, since it is larger than the sum of its proper divisors (18513794).

20444650 is a wasteful number, since it uses less digits than its factorization.

20444650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026 (or 10021 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20444650 is about 4521.5760526613. The cubic root of 20444650 is about 273.4386450564.

The spelling of 20444650 in words is "twenty million, four hundred forty-four thousand, six hundred fifty".