21363950 has 12 divisors (see below), whose sum is σ = 39737040. Its totient is φ = 8545560.

The previous prime is 21363949. The next prime is 21363977. The reversal of 21363950 is 5936312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213590 + ... + 213689.

It is an arithmetic number, because the mean of its divisors is an integer number (3311420).

Almost surely, 2^21363950 is an apocalyptic number.

21363950 is a deficient number, since it is larger than the sum of its proper divisors (18373090).

21363950 is a wasteful number, since it uses less digits than its factorization.

21363950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427291 (or 427286 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 21363950 is about 4622.1153166056. The cubic root of 21363950 is about 277.4771238886.

The spelling of 21363950 in words is "twenty-one million, three hundred sixty-three thousand, nine hundred fifty".