21608950 has 48 divisors (see below), whose sum is σ = 44394480. Its totient is φ = 7760000.

The previous prime is 21608941. The next prime is 21608957. The reversal of 21608950 is 5980612.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21608957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55356 + ... + 55744.

It is an arithmetic number, because the mean of its divisors is an integer number (924885).

Almost surely, 2^21608950 is an apocalyptic number.

21608950 is an abundant number, since it is smaller than the sum of its proper divisors (22785530).

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

21608950 is a wasteful number, since it uses less digits than its factorization.

21608950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 21608950 is about 4648.5427824212. The cubic root of 21608950 is about 278.5337897239.

The spelling of 21608950 in words is "twenty-one million, six hundred eight thousand, nine hundred fifty".