21834801 has 12 divisors (see below), whose sum is σ = 31674240. Its totient is φ = 14494200.

The previous prime is 21834793. The next prime is 21834803. The reversal of 21834801 is 10843812.

21834801 is a `hidden beast` number, since 2 + 183 + 480 + 1 = 666.

It is not a de Polignac number, because 21834801 - 2³ = 21834793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21834803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2925 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (2639520).

Almost surely, 2^21834801 is an apocalyptic number.

It is an amenable number.

21834801 is a deficient number, since it is larger than the sum of its proper divisors (9839439).

21834801 is a wasteful number, since it uses less digits than its factorization.

21834801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396 (or 10393 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 21834801 is about 4672.7723034618. The cubic root of 21834801 is about 279.5008155139.

The spelling of 21834801 in words is "twenty-one million, eight hundred thirty-four thousand, eight hundred one".