20677416 has 16 divisors (see below), whose sum is σ = 51693600. Its totient is φ = 6892464.

The previous prime is 20677411. The next prime is 20677417. The reversal of 20677416 is 61477602.

It is not an unprimeable number, because it can be changed into a prime (20677411) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 430756 + ... + 430803.

It is an arithmetic number, because the mean of its divisors is an integer number (3230850).

Almost surely, 2^20677416 is an apocalyptic number.

It is an amenable number.

20677416 is an abundant number, since it is smaller than the sum of its proper divisors (31016184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20677416 is a wasteful number, since it uses less digits than its factorization.

20677416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861568 (or 861564 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20677416 is about 4547.2426810101. The cubic root of 20677416 is about 274.4724475582.

The spelling of 20677416 in words is "twenty million, six hundred seventy-seven thousand, four hundred sixteen".