21094410 has 32 divisors (see below), whose sum is σ = 51460992. Its totient is φ = 5532480.

The previous prime is 21094393. The next prime is 21094417. The reversal of 21094410 is 1449012.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21094417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3934 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (1608156).

Almost surely, 2^21094410 is an apocalyptic number.

21094410 is an abundant number, since it is smaller than the sum of its proper divisors (30366582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21094410 is a wasteful number, since it uses less digits than its factorization.

21094410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11598.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 21094410 is about 4592.8651188555. The cubic root of 21094410 is about 276.3052440993.

The spelling of 21094410 in words is "twenty-one million, ninety-four thousand, four hundred ten".