21467950 has 48 divisors (see below), whose sum is σ = 46247040. Its totient is φ = 7261920.

The previous prime is 21467933. The next prime is 21467951. The reversal of 21467950 is 5976412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21467951) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 28681 + ... + 29419.

It is an arithmetic number, because the mean of its divisors is an integer number (963480).

Almost surely, 2^21467950 is an apocalyptic number.

21467950 is an abundant number, since it is smaller than the sum of its proper divisors (24779090).

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

21467950 is a wasteful number, since it uses less digits than its factorization.

21467950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 21467950 is about 4633.3519184280. The cubic root of 21467950 is about 277.9266493850.

The spelling of 21467950 in words is "twenty-one million, four hundred sixty-seven thousand, nine hundred fifty".