20777126 has 4 divisors (see below), whose sum is σ = 31165692. Its totient is φ = 10388562.

The previous prime is 20777101. The next prime is 20777167. The reversal of 20777126 is 62177702.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20777092 and 20777101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5194280 + ... + 5194283.

It is an arithmetic number, because the mean of its divisors is an integer number (7791423).

Almost surely, 2^20777126 is an apocalyptic number.

20777126 is a deficient number, since it is larger than the sum of its proper divisors (10388566).

20777126 is a wasteful number, since it uses less digits than its factorization.

20777126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10388565.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 20777126 is about 4558.1932824311. The cubic root of 20777126 is about 274.9129244976.

The spelling of 20777126 in words is "twenty million, seven hundred seventy-seven thousand, one hundred twenty-six".