20427650 has 12 divisors (see below), whose sum is σ = 37995522. Its totient is φ = 8171040.

The previous prime is 20427647. The next prime is 20427653. The reversal of 20427650 is 5672402.

It is an interprime number because it is at equal distance from previous prime (20427647) and next prime (20427653).

It can be written as a sum of positive squares in 3 ways, for example, as 16072081 + 4355569 = 4009^2 + 2087^2 .

It is not an unprimeable number, because it can be changed into a prime (20427653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204227 + ... + 204326.

Almost surely, 2^20427650 is an apocalyptic number.

20427650 is a deficient number, since it is larger than the sum of its proper divisors (17567872).

20427650 is a wasteful number, since it uses less digits than its factorization.

20427650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408565 (or 408560 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20427650 is about 4519.6957862228. The cubic root of 20427650 is about 273.3628347429.

The spelling of 20427650 in words is "twenty million, four hundred twenty-seven thousand, six hundred fifty".