21494350 has 12 divisors (see below), whose sum is σ = 39979584. Its totient is φ = 8597720.

The previous prime is 21494329. The next prime is 21494353. The reversal of 21494350 is 5349412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21494353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214894 + ... + 214993.

It is an arithmetic number, because the mean of its divisors is an integer number (3331632).

Almost surely, 2^21494350 is an apocalyptic number.

21494350 is a deficient number, since it is larger than the sum of its proper divisors (18485234).

21494350 is a wasteful number, since it uses less digits than its factorization.

21494350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429899 (or 429894 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 21494350 is about 4636.1999525473. The cubic root of 21494350 is about 278.0405285701.

The spelling of 21494350 in words is "twenty-one million, four hundred ninety-four thousand, three hundred fifty".