21693034 has 8 divisors (see below), whose sum is σ = 35497728. Its totient is φ = 9860460.

The previous prime is 21693017. The next prime is 21693043. The reversal of 21693034 is 43039612.

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 = 21692993 and 21693011.

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, 493002 + ... + 493045.

It is an arithmetic number, because the mean of its divisors is an integer number (4437216).

Almost surely, 2^21693034 is an apocalyptic number.

21693034 is a deficient number, since it is larger than the sum of its proper divisors (13804694).

21693034 is a wasteful number, since it uses less digits than its factorization.

21693034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986060.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 21693034 is about 4657.5781260221. The cubic root of 21693034 is about 278.8945958303.

The spelling of 21693034 in words is "twenty-one million, six hundred ninety-three thousand, thirty-four".