21892041 has 12 divisors (see below), whose sum is σ = 31817968. Its totient is φ = 14504184.

The previous prime is 21892037. The next prime is 21892097. The reversal of 21892041 is 14029812.

It is not a de Polignac number, because 21892041 - 2² = 21892037 is a prime.

It is a super-2 number, since 2×21892041² = 958522918291362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21891996 and 21892014.

It is not an unprimeable number, because it can be changed into a prime (21892441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5995 + ... + 8928.

Almost surely, 2^21892041 is an apocalyptic number.

It is an amenable number.

21892041 is a deficient number, since it is larger than the sum of its proper divisors (9925927).

21892041 is a wasteful number, since it uses less digits than its factorization.

21892041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15092 (or 15089 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 21892041 is about 4678.8931383395. The cubic root of 21892041 is about 279.7448398256.

The spelling of 21892041 in words is "twenty-one million, eight hundred ninety-two thousand, forty-one".