21026296 has 16 divisors (see below), whose sum is σ = 40263840. Its totient is φ = 10289280.

The previous prime is 21026287. The next prime is 21026303. The reversal of 21026296 is 69262012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27585 + ... + 28336.

It is an arithmetic number, because the mean of its divisors is an integer number (2516490).

Almost surely, 2^21026296 is an apocalyptic number.

It is an amenable number.

21026296 is a deficient number, since it is larger than the sum of its proper divisors (19237544).

21026296 is a wasteful number, since it uses less digits than its factorization.

21026296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55974 (or 55970 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 21026296 is about 4585.4439261646. The cubic root of 21026296 is about 276.0075262248.

The spelling of 21026296 in words is "twenty-one million, twenty-six thousand, two hundred ninety-six".