21677034 has 16 divisors (see below), whose sum is σ = 43471872. Its totient is φ = 7206048.

The previous prime is 21677003. The next prime is 21677041. The reversal of 21677034 is 43077612.

It is a junction number, because it is equal to n+sod(n) for n = 21676992 and 21677010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2419 + ... + 7014.

It is an arithmetic number, because the mean of its divisors is an integer number (2716992).

Almost surely, 2^21677034 is an apocalyptic number.

21677034 is an abundant number, since it is smaller than the sum of its proper divisors (21794838).

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

21677034 is a wasteful number, since it uses less digits than its factorization.

21677034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9821.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 21677034 is about 4655.8601783129. The cubic root of 21677034 is about 278.8260114318.

The spelling of 21677034 in words is "twenty-one million, six hundred seventy-seven thousand, thirty-four".