20677424 has 10 divisors (see below), whose sum is σ = 40062540. Its totient is φ = 10338704.

The previous prime is 20677421. The next prime is 20677463. The reversal of 20677424 is 42477602.

It is not an unprimeable number, because it can be changed into a prime (20677421) 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 as a sum of consecutive naturals, namely, 646154 + ... + 646185.

It is an arithmetic number, because the mean of its divisors is an integer number (4006254).

Almost surely, 2^20677424 is an apocalyptic number.

It is an amenable number.

20677424 is a deficient number, since it is larger than the sum of its proper divisors (19385116).

20677424 is a wasteful number, since it uses less digits than its factorization.

20677424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292347 (or 1292341 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 20677424 is about 4547.2435606640. The cubic root of 20677424 is about 274.4724829556.

The spelling of 20677424 in words is "twenty million, six hundred seventy-seven thousand, four hundred twenty-four".