21692034 has 192 divisors, whose sum is σ = 66044160. Its totient is φ = 4976640.

The previous prime is 21691979. The next prime is 21692063. The reversal of 21692034 is 43029612.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21691989 and 21692007.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 529054 + ... + 529094.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^21692034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21692034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

21692034 is an abundant number, since it is smaller than the sum of its proper divisors (44352126).

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

21692034 is a wasteful number, since it uses less digits than its factorization.

21692034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 21692034 is about 4657.4707728552. The cubic root of 21692034 is about 278.8903102935.

The spelling of 21692034 in words is "twenty-one million, six hundred ninety-two thousand, thirty-four".