21925038 has 8 divisors (see below), whose sum is σ = 43850088. Its totient is φ = 7308344.

The previous prime is 21925021. The next prime is 21925097. The reversal of 21925038 is 83052912.

It is a happy number.

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

21925038 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21924996 and 21925014.

It is a congruent number.

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, 1827081 + ... + 1827092.

It is an arithmetic number, because the mean of its divisors is an integer number (5481261).

Almost surely, 2^21925038 is an apocalyptic number.

21925038 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21925038 is a wasteful number, since it uses less digits than its factorization.

21925038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654178.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 21925038 is about 4682.4179651116. The cubic root of 21925038 is about 279.8853186819.

The spelling of 21925038 in words is "twenty-one million, nine hundred twenty-five thousand, thirty-eight".