21850274 has 8 divisors (see below), whose sum is σ = 32916780. Its totient is φ = 10878016.

The previous prime is 21850273. The next prime is 21850277. The reversal of 21850274 is 47205812.

It can be written as a sum of positive squares in 2 ways, for example, as 21298225 + 552049 = 4615^2 + 743^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21850273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22979 + ... + 23910.

Almost surely, 2^21850274 is an apocalyptic number.

21850274 is a deficient number, since it is larger than the sum of its proper divisors (11066506).

21850274 is a wasteful number, since it uses less digits than its factorization.

21850274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47124.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 21850274 is about 4674.4276655009. The cubic root of 21850274 is about 279.5668216870.

The spelling of 21850274 in words is "twenty-one million, eight hundred fifty thousand, two hundred seventy-four".