21926034 has 24 divisors (see below), whose sum is σ = 51161292. Its totient is φ = 6746400.

The previous prime is 21926033. The next prime is 21926041. The reversal of 21926034 is 43062912.

It can be written as a sum of positive squares in 2 ways, for example, as 21650409 + 275625 = 4653^2 + 525^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21925989 and 21926007.

It is not an unprimeable number, because it can be changed into a prime (21926033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46617 + ... + 47084.

Almost surely, 2^21926034 is an apocalyptic number.

21926034 is an abundant number, since it is smaller than the sum of its proper divisors (29235258).

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

21926034 is a wasteful number, since it uses less digits than its factorization.

21926034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93722 (or 93719 counting only the distinct ones).

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

The square root of 21926034 is about 4682.5243192107. The cubic root of 21926034 is about 279.8895567826.

Adding to 21926034 its reverse (43062912), we get a palindrome (64988946).

The spelling of 21926034 in words is "twenty-one million, nine hundred twenty-six thousand, thirty-four".