20061946 has 4 divisors (see below), whose sum is σ = 30092922. Its totient is φ = 10030972.

The previous prime is 20061941. The next prime is 20061949. The reversal of 20061946 is 64916002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13359025 + 6702921 = 3655^2 + 2589^2 .

It is not an unprimeable number, because it can be changed into a prime (20061941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015485 + ... + 5015488.

Almost surely, 2^20061946 is an apocalyptic number.

20061946 is a deficient number, since it is larger than the sum of its proper divisors (10030976).

20061946 is a wasteful number, since it uses less digits than its factorization.

20061946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10030975.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20061946 is about 4479.0563738359. The cubic root of 20061946 is about 271.7217183443.

Adding to 20061946 its reverse (64916002), we get a palindrome (84977948).

The spelling of 20061946 in words is "twenty million, sixty-one thousand, nine hundred forty-six".