20677954 has 16 divisors (see below), whose sum is σ = 34151040. Its totient is φ = 9311760.

The previous prime is 20677939. The next prime is 20677973. The reversal of 20677954 is 45977602.

It is a super-2 number, since 2×20677954² = 855155563252232, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 1914 + ... + 6709.

It is an arithmetic number, because the mean of its divisors is an integer number (2134440).

Almost surely, 2^20677954 is an apocalyptic number.

20677954 is a deficient number, since it is larger than the sum of its proper divisors (13473086).

20677954 is a wasteful number, since it uses less digits than its factorization.

20677954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8745.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 20677954 is about 4547.3018373537. The cubic root of 20677954 is about 274.4748280120.

The spelling of 20677954 in words is "twenty million, six hundred seventy-seven thousand, nine hundred fifty-four".