21790114 has 8 divisors (see below), whose sum is σ = 33568668. Its totient is φ = 10600560.

The previous prime is 21790099. The next prime is 21790123. The reversal of 21790114 is 41109712.

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 27889 = 4665^2 + 167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 147157 + ... + 147304.

Almost surely, 2^21790114 is an apocalyptic number.

21790114 is a deficient number, since it is larger than the sum of its proper divisors (11778554).

21790114 is a wasteful number, since it uses less digits than its factorization.

21790114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294500.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 21790114 is about 4667.9882176372. The cubic root of 21790114 is about 279.3100102738.

Adding to 21790114 its reverse (41109712), we get a palindrome (62899826).

It can be divided in two parts, 21790 and 114, that added together give a square (21904 = 148²).

The spelling of 21790114 in words is "twenty-one million, seven hundred ninety thousand, one hundred fourteen".