21619034 has 8 divisors (see below), whose sum is σ = 33838560. Its totient is φ = 10339516.

The previous prime is 21619027. The next prime is 21619043. The reversal of 21619034 is 43091612.

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

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 21618994 and 21619012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234944 + ... + 235035.

It is an arithmetic number, because the mean of its divisors is an integer number (4229820).

Almost surely, 2^21619034 is an apocalyptic number.

21619034 is a deficient number, since it is larger than the sum of its proper divisors (12219526).

21619034 is a wasteful number, since it uses less digits than its factorization.

21619034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470004.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 21619034 is about 4649.6272968917. The cubic root of 21619034 is about 278.5771097054.

The spelling of 21619034 in words is "twenty-one million, six hundred nineteen thousand, thirty-four".