21877314 has 8 divisors (see below), whose sum is σ = 43754640. Its totient is φ = 7292436.

The previous prime is 21877291. The next prime is 21877319. The reversal of 21877314 is 41377812.

It is a happy number.

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

21877314 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21877319) 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, 1823104 + ... + 1823115.

It is an arithmetic number, because the mean of its divisors is an integer number (5469330).

Almost surely, 2^21877314 is an apocalyptic number.

21877314 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.

21877314 is a wasteful number, since it uses less digits than its factorization.

21877314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646224.

The product of its digits is 9408, while the sum is 33.

The square root of 21877314 is about 4677.3191039312. The cubic root of 21877314 is about 279.6820966820.

The spelling of 21877314 in words is "twenty-one million, eight hundred seventy-seven thousand, three hundred fourteen".