21877341 has 8 divisors (see below), whose sum is σ = 30705120. Its totient is φ = 13817232.

The previous prime is 21877321. The next prime is 21877363. The reversal of 21877341 is 14377812.

It is a happy number.

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

It is not a de Polignac number, because 21877341 - 2¹⁰ = 21876317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21877321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191850 + ... + 191963.

It is an arithmetic number, because the mean of its divisors is an integer number (3838140).

Almost surely, 2^21877341 is an apocalyptic number.

It is an amenable number.

21877341 is a deficient number, since it is larger than the sum of its proper divisors (8827779).

21877341 is a wasteful number, since it uses less digits than its factorization.

21877341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383835.

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

The square root of 21877341 is about 4677.3219901991. The cubic root of 21877341 is about 279.6822117390.

The spelling of 21877341 in words is "twenty-one million, eight hundred seventy-seven thousand, three hundred forty-one".