21934126 has 4 divisors (see below), whose sum is σ = 32901192. Its totient is φ = 10967062.

The previous prime is 21934093. The next prime is 21934127. The reversal of 21934126 is 62143912.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21934126² = 962211766767752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21934094 and 21934103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21934127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5483530 + ... + 5483533.

It is an arithmetic number, because the mean of its divisors is an integer number (8225298).

Almost surely, 2^21934126 is an apocalyptic number.

21934126 is a deficient number, since it is larger than the sum of its proper divisors (10967066).

21934126 is a wasteful number, since it uses less digits than its factorization.

21934126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10967065.

The product of its digits is 2592, while the sum is 28.

The square root of 21934126 is about 4683.3883033547. The cubic root of 21934126 is about 279.9239844669.

The spelling of 21934126 in words is "twenty-one million, nine hundred thirty-four thousand, one hundred twenty-six".