21464150 has 12 divisors (see below), whose sum is σ = 39923412. Its totient is φ = 8585640.

The previous prime is 21464123. The next prime is 21464153. The reversal of 21464150 is 5146412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21464153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214592 + ... + 214691.

It is an arithmetic number, because the mean of its divisors is an integer number (3326951).

Almost surely, 2^21464150 is an apocalyptic number.

21464150 is a deficient number, since it is larger than the sum of its proper divisors (18459262).

21464150 is a wasteful number, since it uses less digits than its factorization.

21464150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429295 (or 429290 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 21464150 is about 4632.9418299823. The cubic root of 21464150 is about 277.9102499991.

The spelling of 21464150 in words is "twenty-one million, four hundred sixty-four thousand, one hundred fifty".