21294052 has 24 divisors (see below), whose sum is σ = 40300736. Its totient is φ = 9786528.

The previous prime is 21294029. The next prime is 21294089. The reversal of 21294052 is 25049212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13993 + ... + 15439.

Almost surely, 2^21294052 is an apocalyptic number.

It is an amenable number.

21294052 is a deficient number, since it is larger than the sum of its proper divisors (19006684).

21294052 is a wasteful number, since it uses less digits than its factorization.

21294052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 21294052 is about 4614.5478651760. The cubic root of 21294052 is about 277.1741791826.

The spelling of 21294052 in words is "twenty-one million, two hundred ninety-four thousand, fifty-two".