20462906 has 4 divisors (see below), whose sum is σ = 30694362. Its totient is φ = 10231452.

The previous prime is 20462879. The next prime is 20462921. The reversal of 20462906 is 60926402.

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., 12538681 + 7924225 = 3541^2 + 2815^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5115725 + ... + 5115728.

Almost surely, 2^20462906 is an apocalyptic number.

20462906 is a deficient number, since it is larger than the sum of its proper divisors (10231456).

20462906 is a wasteful number, since it uses less digits than its factorization.

20462906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10231455.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20462906 is about 4523.5943673146. The cubic root of 20462906 is about 273.5200096320.

The spelling of 20462906 in words is "twenty million, four hundred sixty-two thousand, nine hundred six".