21999034 has 8 divisors (see below), whose sum is σ = 33301620. Its totient is φ = 10898496.

The previous prime is 21999013. The next prime is 21999041. The reversal of 21999034 is 43099912.

It can be written as a sum of positive squares in 2 ways, for example, as 20566225 + 1432809 = 4535^2 + 1197^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21998984 and 21999002.

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, 50239 + ... + 50674.

Almost surely, 2^21999034 is an apocalyptic number.

21999034 is a deficient number, since it is larger than the sum of its proper divisors (11302586).

21999034 is a wasteful number, since it uses less digits than its factorization.

21999034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101024.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 21999034 is about 4690.3127827470. The cubic root of 21999034 is about 280.1998318389.

The spelling of 21999034 in words is "twenty-one million, nine hundred ninety-nine thousand, thirty-four".