20677982 has 8 divisors (see below), whose sum is σ = 33402936. Its totient is φ = 9543672.

The previous prime is 20677973. The next prime is 20677991. The reversal of 20677982 is 28977602.

It is an interprime number because it is at equal distance from previous prime (20677973) and next prime (20677991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397628 + ... + 397679.

It is an arithmetic number, because the mean of its divisors is an integer number (4175367).

Almost surely, 2^20677982 is an apocalyptic number.

20677982 is a deficient number, since it is larger than the sum of its proper divisors (12724954).

20677982 is a wasteful number, since it uses less digits than its factorization.

20677982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795322.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 20677982 is about 4547.3049161014. The cubic root of 20677982 is about 274.4749519006.

The spelling of 20677982 in words is "twenty million, six hundred seventy-seven thousand, nine hundred eighty-two".