21795038 has 8 divisors (see below), whose sum is σ = 32909520. Its totient is φ = 10825200.

The previous prime is 21795019. The next prime is 21795043. The reversal of 21795038 is 83059712.

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 = 21794989 and 21795007.

It is a congruent number.

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, 35783 + ... + 36386.

It is an arithmetic number, because the mean of its divisors is an integer number (4113690).

Almost surely, 2^21795038 is an apocalyptic number.

21795038 is a deficient number, since it is larger than the sum of its proper divisors (11114482).

21795038 is a wasteful number, since it uses less digits than its factorization.

21795038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72322.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 21795038 is about 4668.5156099129. The cubic root of 21795038 is about 279.3310476260.

The spelling of 21795038 in words is "twenty-one million, seven hundred ninety-five thousand, thirty-eight".